CN109702248B - Reaming bit for workpiece blind hole - Google Patents
Reaming bit for workpiece blind hole Download PDFInfo
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- CN109702248B CN109702248B CN201910158254.9A CN201910158254A CN109702248B CN 109702248 B CN109702248 B CN 109702248B CN 201910158254 A CN201910158254 A CN 201910158254A CN 109702248 B CN109702248 B CN 109702248B
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Abstract
A hole expanding drill bit for blind holes of workpieces relates to a hole expanding drill bit, wherein a deep groove (18) is longitudinally arranged from the front end face to the middle part of a drill rod (19), a shallow groove (14) is transversely arranged on the front end face of the drill rod, a lengthened long round hole (11) in the middle part of a moving plate (12) is arranged in a long round shaft (16) penetrating through the middle part of the deep groove, a cylinder (3) is arranged at the front end of the moving plate, oblique raised strips (4) are respectively arranged on the moving plate on two sides of the cylinder, the rear ends of two cutting blades (7) are respectively hinged and connected in the shallow groove through a shaft (10), alloy surfaces (5) are respectively arranged on the outer sides of the front ends of the two cutting blades, the alloy surfaces at the front ends of the two cutting blades are respectively pushed and separated by the two oblique raised strips, and a bearing (1); the invention utilizes the matching of the bearing and the bottom of the blind hole to obtain the positioning rotation of the drill rod, and obtains the reaming excavation of the annular groove in the middle of the blind hole through the alloy surfaces of the two cutting blades.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a hole expanding drill bit, in particular to a hole expanding drill bit for a blind hole of a workpiece.
[ background of the invention ]
When a casting is processed in the field of machining, a screw cannot be arranged on the casting, so that the casting is difficult to be connected with other workpieces in later use, and the existing connection mode is that a thin plate with holes is arranged on the workpiece, and then the two workpieces are connected by using bolts; the other mode is that a screw hole is machined in a workpiece, and the connection between the two workpieces is obtained through a screw, so that the connection between the workpiece and the workpiece is extremely limited, and particularly when other various devices are required to be fixed on the workpiece, the mode of machining the screw hole in the workpiece cannot meet the actual requirement; the screw rod installation in special needs can not be adapted; the implantation of a screw on a workpiece is always the research and development direction of technicians in the field, and is also a technical bottleneck for adding new functions to the later use process of the workpiece.
[ summary of the invention ]
In order to overcome the defects in the background art, the invention discloses a reaming bit for a blind hole of a workpiece, wherein the positioning rotation of a drill rod is obtained by matching a bearing with the bottom of the blind hole, and the reaming excavation of an annular groove in the middle of the blind hole is obtained through the alloy surfaces of two cutting blades.
The technical scheme for realizing the invention is as follows:
the hole expanding drill bit for the blind hole of the workpiece comprises a drill rod, a long circular shaft, a moving plate, cutting blades and a bearing, wherein a deep groove is longitudinally formed from the end face of the front end of the drill rod to the middle part of the drill rod, a shallow groove is transversely formed in the end face of the front end of the drill rod, an elongated long circular hole penetrating through the middle part of the moving plate in the deep groove of the drill rod is limited by the long circular shaft penetrating through the middle part of the deep groove, a cylinder is arranged at the front end of the moving plate, oblique protruding strips corresponding to the shallow groove are respectively arranged on the moving plate on two sides of the cylinder, the rear ends of the two cutting blades are respectively hinged in the shallow groove by the shaft, alloy surfaces are respectively arranged on the outer sides of the front ends of the two cutting blades, the alloy surfaces of the front ends of the two cutting blades are respectively pushed by the two oblique protruding strips to be outwards.
The reaming drill bit for the workpiece blind hole is characterized in that the drill rods on two sides of the middle of the deep groove of each drill rod are respectively provided with a long round hole, the middle of each long round shaft penetrates through the middle of the movable plate to a lengthened long round hole arranged close to the rear end, and two ends of each long round shaft are respectively fixed in two long round holes of each drill rod.
The reaming bit for the workpiece blind hole is characterized in that a plane formed by sinking is respectively arranged on the outer edge surface of the drill rod at the outer ends of the two long circular holes of the drill rod.
The reaming drill bit for the workpiece blind hole is characterized in that a reducing column is arranged at the front end of a cylinder body, and an inner ring of a bearing is sleeved on the reducing column.
The reaming drill bit for the workpiece blind hole is characterized in that the middle of the end face of the front end of the cylinder body protrudes, and the diameter reducing column is arranged on the middle of the protrusion.
The inner ends of the two cutting blades are respectively provided with a circular ring, and the inner ends of the two cutting blades are respectively hinged into a shallow groove of a drill rod by two shafts.
The reaming bit for the workpiece blind hole is characterized in that shaft holes B with middle parts penetrating through the shallow grooves are respectively formed in two sides of the deep groove in the outer edge of the front end of the drill rod, the middle parts of the two shafts are respectively penetrated in the shaft holes A of the two cutting blade rings, and two ends of the two shafts are respectively penetrated in the shaft holes B penetrating through the shallow grooves.
The inner surfaces of the front ends of the cutting blades of the expanding drill bit of the workpiece blind hole are respectively provided with an inclined plane.
The outer face of the front end of the reaming bit of the workpiece blind hole is provided with a bulge respectively, and the two bulges are provided with fully-wrapped alloy faces respectively.
The application of the reaming bit for the blind hole of the workpiece comprises marking hole positions on the workpiece, drilling the blind hole on the workpiece, selecting a matched reaming bit, preparing before reaming, drilling an annular groove in the middle of the blind hole of the workpiece by using the reaming bit, reaming, cleaning the blind hole and implanting a screw;
A. marking hole sites on the workpiece;
marking hole sites on the workpiece according to a design drawing, and fixing the workpiece on a sliding bedplate of a drilling machine to enable the hole sites to correspond to the drill bits;
B. punching blind holes on the workpiece;
starting the equipment to enable the drill bit to punch holes at the marked hole positions, wherein the hole depth needs to meet the requirement of subsequent hole expanding to obtain blind holes;
C. selecting a matched expanding bit;
selecting a bearing of the expanding drill bit and the diameter of the drill rod to be matched with or slightly thinner than the aperture of the blind hole;
D. preparing before reaming;
inserting the clamping end of a drill rod of the reaming bit into a clamping sheet of a drill chuck of the bench drill, fixing the clamping end of the drill rod by the clamping sheet of the screwing drill chuck, then enabling a bearing and a cylinder of the reaming bit to sequentially enter the blind hole, holding alloy surfaces of the two cutting sheets by hands at the moment to enable the two cutting sheets and the front end of the drill rod to sequentially enter the blind hole, and enabling an outer ring of the bearing to abut against an outer edge wall, close to the bottom of a conical hole formed at the inner end of the blind hole, of the outer ring;
E. using a hole expanding drill bit to punch an annular groove in the middle of a blind hole of a workpiece for expanding a hole;
starting a main shaft of a drilling machine to drive a hole expanding drill bit to rotate, enabling a workpiece on a sliding platen to move towards the direction of the hole expanding drill bit through a rocking wheel, enabling an outer ring of a bearing to be abutted against the inner end of a blind hole, enabling an inner ring of the bearing and a drill rod of the hole expanding drill bit to rotate synchronously, enabling a moving plate to move backwards under the driving of an extrusion cylinder, enabling two oblique convex strips to extrude two cutting blades to be separated from each other, enabling alloy surfaces on protrusions of the two cutting blades to start to perform surrounding cutting on the middle of the blind hole, and reaming the middle of the blind hole; turning off the power supply of the drilling machine, and moving the workpiece on the sliding platen through the rocking wheel to enable the reaming bit to exit the blind hole;
F. cleaning the blind holes;
flushing the blind hole by using a high-pressure water gun to finish the operation;
G. implanting a screw rod;
pour into metal bonding liquid in the dry blind hole that has the ring channel reaming, press the locking plate and another locking plate of screw rod in the groove of screw rod, use the roof of screw rod to insert the blind hole, when the one end tip of screw rod is close the blind hole bottom of the hole, roof one end just contacts with the hole bottom of blind hole, the pressure is exerted to the inclined plane of locking plate and another locking plate respectively to two inclined planes of the tip of the roof other end this moment, the outside arch of locking plate and another locking plate just is in the ring channel reaming, treat that metal bonding liquid solidifies the implantation that acquires the screw rod, and the external screw thread of screw rod outer end alright with the screw of other work pieces or be connected with other.
Through the disclosure, the beneficial effects of the invention are as follows:
when the reaming bit for the blind hole of the workpiece is used, the bearing is contacted with the bottom of the blind hole to form a fulcrum, the drill rod rotates and the inclined convex strip on the moving plate extrudes, and the alloy surfaces of the two cutting blades rotate to obtain the reaming excavation of the annular groove in the middle of the blind hole; the invention further discloses a matched screw structure, and the application range of the workpiece is expanded through the implantation of the screw; the invention establishes a foundation for the subsequent connection of other parts of the workpiece and effectively expands the application range of the workpiece.
[ description of the drawings ]
FIG. 1 is a schematic view of the assembled structure of the present invention;
FIG. 2 is a perspective view of a cutting blade according to the present invention;
FIG. 3 is a schematic view of another angular perspective of the cutting blade of the present invention;
FIG. 4 is a perspective view of the movable plate of the present invention;
FIG. 5 is a perspective view of the drill stem of the present invention;
FIG. 6 is a schematic view of the reamer head of the present invention in a position to enter a blind hole;
FIG. 7 is a schematic view of the structure of the reamer head of the present invention in a state of reaming in a blind hole;
FIG. 8 is a schematic view of the reamer head of the present invention in a blind hole reaming configuration;
FIG. 9 is a schematic view of a hole-enlarging structure of the ring-shaped groove formed in the blind hole by the hole-enlarging bit according to the present invention;
FIG. 10 is a schematic view of the screw used in the present invention when implanted in a blind hole;
FIG. 11 is a schematic view of a screw configuration for use with the present invention;
in the figure: 1. a bearing; 2. reducing the diameter of the column; 3. a cylinder; 4. oblique raised strips; 5. alloy surface; 6. a bevel; 7. cutting blades; 8. the shaft hole A; 9. a circular ring; 10. a shaft; 11. lengthening the long round hole; 12. moving the plate; 13. a shaft hole B; 14. shallow-groove; 15. a long round hole; 16. a long circular shaft; 17. a plane; 18. deep grooves; 19. a drill stem; 20. a protrusion; 21. the middle part is convex; 22. a cross-shaped opening; 23. a gap; 24. a workpiece; 25. blind holes; 26. reaming the annular groove; 27. an external thread; 28. a top plate; 29. a screw; 30. a locking plate; 31. a groove; 32. a long cylinder; 33. and (7) a pin shaft.
[ detailed description ] embodiments
The present invention will be further illustrated with reference to the following examples; the following examples are not intended to limit the present invention, and are only used as a support for the implementation of the present invention, and any equivalent structure replacement within the technical framework of the present invention is included in the protection scope of the present invention;
the reaming bit for blind holes of workpieces, which is described with reference to fig. 1 to 7, comprises a drill rod 19, a long circular shaft 16, a moving plate 12, cutting blades 7 and a bearing 1, wherein a deep groove 18 is longitudinally arranged from the front end surface to the middle of the drill rod 19, a shallow groove 14 is transversely arranged on the front end surface of the drill rod 19, namely a cross-shaped groove 22 of the front end surface of the drill rod 19 is formed by the longitudinally arranged deep groove 18 and the transversely arranged shallow groove 14, an elongated long circular hole 11 penetrating through the middle of the moving plate 12 in the deep groove 18 of the drill rod 19 is movably limited by the long circular shaft 16 penetrating through the middle of the deep groove 18, namely the moving plate 12 is limited by the long circular shaft 16 to move back and forth and can not move left and right, the moving plate 3 is arranged at the front end of the moving plate 12, the raised strips 4 corresponding to the shallow grooves 14 are respectively arranged on the 12 at both sides of the cylinder 3, the inner ends of the two cutting blades 7 are respectively provided with a circular ring 9, shaft holes 13 penetrating through the middle shallow grooves, the middle parts of the two shafts 10 are respectively penetrated in the shaft holes A8 of the circular rings 9 of the two cutting blades 7, and the two ends of the two shafts 10 are respectively penetrated in the shaft holes B13 penetrating through the shallow grooves 14; the inner surfaces of the front ends of the cutting blades 7 are respectively provided with an inclined surface 6; the outer face of the front end of each cutting blade 7 is provided with a protrusion 20, the two protrusions 20 are provided with a fully-wrapped alloy face 5, the outer sides of the front ends of the two cutting blades 7 are provided with alloy faces 5, the alloy faces 5 at the front ends of the two cutting blades 7 are respectively pushed by two oblique protruding strips 4 to be separated outwards to obtain the excavation of the annular groove counterbores 26 in the blind holes 25, and the front end of the cylinder 3 is provided with a bearing 1.
With reference to fig. 1, 4 and 5, the drill rods 19 at two sides of the middle of the deep groove 18 of the drill rod 19 are respectively provided with long round holes 15, the middle of a long round shaft 16 penetrates through the middle of the moving plate 12 to an elongated long round hole 11 arranged near the rear end, and two ends of the long round shaft 16 are respectively fixed in the two long round holes 15 of the drill rod 19; the outer edge surfaces of the drill rod 19 at the outer ends of the two oblong holes 15 of the drill rod 19 are respectively provided with a plane 17 formed by a recess.
With reference to fig. 1, 4, 6 and 7, the front end face of the cylinder 3 is provided with a middle protrusion 21, the diameter-reducing column 2 is arranged on the middle protrusion 21, and the inner ring of the bearing 1 is sleeved on the diameter-reducing column 2; cylinder 3 that this application can be made is slightly thin for bearing 1, through the cylinder 3 that becomes thin acquire not with the outer lane contact of bearing 1, what this application adopted sets up middle part protrusion 21 at the front end terminal surface of cylinder 3, forms gap 23 between the front end terminal surface of bearing 1 after the installation like this and cylinder 3, acquires the bearing 1 outer lane by gap 23 and does not contact with cylinder 3.
The application of the reaming bit for the workpiece blind hole in combination with the attached drawings 1 to 11 comprises marking a hole position on a workpiece, drilling the blind hole on the workpiece, selecting a matched reaming bit, preparing before reaming, drilling an annular groove in the middle of the blind hole of the workpiece by using the reaming bit, reaming, cleaning the blind hole and implanting a screw;
A. marking hole sites on the workpiece;
marking hole sites on the workpiece 24 according to a design drawing, and fixing the workpiece 24 on a sliding bedplate of a drilling machine to enable the hole sites to correspond to the drill bits;
B. punching blind holes on the workpiece;
starting the equipment to make the drill bit punch at the marked hole position, wherein the hole depth needs to meet the requirement of subsequent reaming to obtain a blind hole 25;
C. selecting a matched expanding bit;
the diameter of the bearing 1 of the expanding bit and the diameter of the drill rod 19 are selected to be matched with the aperture of the blind hole 25 or slightly thinner;
D. preparing before reaming;
inserting the clamping end of a drill rod 19 of the reaming bit into a clamping sheet of a drill chuck of the bench drill, fixing the clamping end of the drill rod by the clamping sheet of the screwing drill chuck, then advancing a bearing 1 and a cylinder 3 of the reaming bit into the blind hole 25, at the moment, holding the alloy surfaces 5 of the two cutting sheets 7 by hands to enable the two cutting sheets 7 and the front end of the drill rod 19 to be advanced into the blind hole 25, and at the moment, an outer ring of the bearing 1 abuts against the outer edge wall, close to the bottom of a conical hole formed at the inner end of the blind hole 25;
E. using a hole expanding drill bit to punch an annular groove in the middle of a blind hole of a workpiece for expanding a hole;
starting a main shaft of a drilling machine to drive a hole expanding drill bit to rotate, enabling a workpiece 24 on a sliding platen to move towards the direction of the hole expanding drill bit through a rocking wheel, enabling an outer ring of a bearing 1 to be propped against the inner end of a blind hole 25 at the moment, enabling an inner ring of the bearing 1 and a drill rod 19 of the hole expanding drill bit to rotate synchronously, driving a moving plate 12 to move backwards under the driving of an extrusion cylinder 3 at the moment, enabling two oblique protruding strips 4 to extrude two cutting blades 7 to be separated from each other, and enabling alloy surfaces 5 on protrusions 20 of the two cutting blades 7 to start to cut the middle of the blind hole 25 in a surrounding mode until a; turning off the power supply of the drilling machine, and moving the workpiece 24 on the sliding platen through the rocking wheel to enable the reaming bit to exit the blind hole 25;
F. cleaning the blind holes;
flushing the blind hole 25 by using a high-pressure water gun to finish the operation;
G. implanting a screw rod;
filling metal bonding liquid into a dry blind hole 25 with an annular groove counterbored hole 26, pressing a locking plate 30 and another locking plate 30 of a screw 29 into a groove 31 of the screw 29, wherein the groove 31 is formed from one end to the middle of the screw 29, one ends of the two locking plates 30 are hinged and connected with the bottom of the groove 31 close to the groove 31 by a pin shaft 33, the bottom is shown in figures 10 and 11, a top plate 28 is penetrated into a long circular hole in the middle of the top plate 28 by a long circular column 32, the long circular hole is twice as long as the length from one side to the other side of the long circular column 32, the two ends of the long circular column 32 are respectively penetrated into the long circular hole of the screw 29, the top plate 28 of the screw 29 is inserted into the blind hole 25, when the end part of one end of the screw 29 is close to the bottom of the blind hole 25, one end of the top plate 28 is contacted with the bottom of the blind hole 25, at the moment, two inclined planes of a pointed end at the other end of, the screw 29 is implanted after the metal bonding liquid is solidified, and the external thread 27 at the outer end of the screw 29 can be connected with the screw hole of other workpieces 24 or other fittings.
The present invention is not described in detail in the prior art.
Claims (6)
1. The reaming bit for the blind holes of the workpiece comprises a drill rod (19), a long round shaft (16), a moving plate (12), a cutting blade (7) and a bearing (1), and is characterized in that: a deep groove (18) which is longitudinally arranged is arranged from the end face of the front end of a drill rod (19) to the middle part, a shallow groove (14) which is transversely arranged is also arranged on the end face of the front end of the drill rod (19), a lengthened long round hole (11) which penetrates through the middle part of a moving plate (12) in the deep groove (18) of the drill rod (19) forms movable limitation in a long round shaft (16) which penetrates through the middle part of the deep groove (18), a cylinder body (3) is arranged at the front end of the moving plate (12), oblique convex strips (4) which correspond to the shallow grooves (14) are respectively arranged on the moving plate (12) at two sides of the cylinder body (3), the rear ends of two cutting blades (7) are respectively hinged and connected in the shallow grooves (14) through shafts (10), alloy surfaces (5) are respectively arranged at the outer sides of the front ends of the two cutting blades (7), the alloy surfaces (5) at the front ends of the two cutting blades (7) are respectively pushed by the two oblique convex strips (4) to be separated and, the front end of the cylinder (3) is provided with a bearing (1);
the drill rods (19) on two sides of the middle of the deep groove (18) of each drill rod (19) are respectively provided with a long round hole (15), the middle of each long round shaft (16) penetrates through the middle of the moving plate (12) to a lengthened long round hole (11) arranged close to the rear end, and two ends of each long round shaft (16) are respectively fixed in the two long round holes (15) of each drill rod (19);
the outer edge surfaces of the drill rod (19) at the outer ends of the two long round holes (15) of the drill rod (19) are respectively provided with a plane (17) formed by a recess;
the front end of the cylinder body (3) is provided with a reducing column (2), and the inner ring of the bearing (1) is sleeved on the reducing column (2);
the front end face of the column body (3) is provided with a middle protrusion (21), and the reducing column (2) is arranged on the middle protrusion (21).
2. A reamer bit for blind holes in workpieces according to claim 1, wherein: the inner ends of the two cutting blades (7) are respectively provided with a circular ring (9), and the inner ends of the two cutting blades (7) are respectively hinged and connected in a shallow groove (14) of a drill rod (19) by two shafts (10).
3. A reamer bit for blind holes in workpieces according to claim 1, wherein: two sides of a deep groove (18) on the outer edge of the front end of a drill rod (19) are respectively provided with a shaft hole B (13) with the middle part penetrating through a shallow groove (14), the middle parts of two shafts (10) are respectively penetrated in the shaft holes A (8) of the circular rings (9) of the two cutting blades (7), and the two ends of the two shafts (10) are respectively penetrated in the shaft holes B (13) penetrating through the shallow groove (14).
4. A reamer bit for blind holes in workpieces according to claim 1, wherein: the inner surfaces of the front ends of the cutting blades (7) are respectively provided with an inclined plane (6).
5. A reamer bit for blind holes in workpieces according to claim 1, wherein: the outer face of the front end of the cutting blade (7) is provided with a bulge (20) respectively, and the two bulges (20) are provided with fully-wrapped alloy faces (5) respectively.
6. Use of a reamer bit for blind holes in workpieces according to any one of claims 1 to 5, characterized by: marking hole positions on a workpiece, drilling blind holes on the workpiece, selecting a matched reaming bit, preparing before reaming, drilling an annular groove in the middle of the blind hole of the workpiece by using the reaming bit, and cleaning the blind hole and implanting a screw;
A. marking hole sites on the workpiece;
marking hole sites on the workpiece (24) according to a design drawing, and fixing the workpiece (24) on a sliding bedplate of a drilling machine to enable the hole sites to correspond to the drill bits;
B. punching blind holes on the workpiece;
starting the equipment to enable the drill bit to punch holes at the marked hole positions, wherein the hole depth needs to meet the requirement of subsequent hole expanding to obtain blind holes (25);
C. selecting a matched expanding bit;
the diameter of a bearing (1) of the reaming bit and the diameter of a drill rod (19) are selected to be matched with the bore diameter of the blind hole (25) or slightly thinner;
D. preparing before reaming;
inserting the clamping end of a drill rod (19) of the reaming bit into a clamping sheet of a drill chuck of the bench drill, fixing the clamping end of the drill rod by the screwing drill chuck through the clamping sheet, then advancing a bearing (1) and a cylinder (3) of the reaming bit into the blind hole (25), and at the moment, holding alloy surfaces (5) of two cutting sheets (7) by hands to enable the front ends of the two cutting sheets (7) and the drill rod (19) to be advanced into the blind hole (25), wherein at the moment, an outer ring of the bearing (1) is propped against the outer edge wall, close to the bottom of a conical hole, formed at the inner end of the blind hole (25);
E. using a hole expanding drill bit to punch an annular groove in the middle of a blind hole of a workpiece for expanding a hole;
starting a main shaft of a drilling machine to drive a hole expanding drill bit to rotate, enabling a workpiece (24) on a sliding platen to move towards the direction of the hole expanding drill bit through a rocking wheel, enabling an outer ring of a bearing (1) to abut against the inner end of a blind hole (25), enabling an inner ring of the bearing (1) and a drill rod (19) of the hole expanding drill bit to rotate synchronously, enabling a movable plate (12) to be driven by an extrusion cylinder (3) to move backwards, enabling two oblique protruding strips (4) to extrude two cutting blades (7) to be separated from each other, and enabling alloy surfaces (5) on protrusions (20) of the two cutting blades (7) to start to perform surrounding cutting on the middle of the blind hole (25) until a ring-shaped hole expanding hole (26) meeting requirements is formed; turning off the power supply of the drilling machine, and moving a workpiece (24) on the sliding bedplate through the rocking wheel to enable the reaming bit to exit the blind hole (25);
F. cleaning the blind holes;
flushing the blind hole (25) by using a high-pressure water gun to finish the operation;
G. implanting a screw rod;
pouring metal bonding liquid into a dry blind hole (25) with an annular groove counterbored hole (26), pressing a locking plate (30) and another locking plate (30) of a screw (29) into a groove (31) of the screw (29), inserting a top plate (28) of the screw (29) into the blind hole (25), when one end of the screw (29) approaches the bottom of the blind hole (25), one end of the top plate (28) is contacted with the bottom of the blind hole (25), at the moment, two inclined planes of a sharp head at the other end of the top plate (28) respectively apply pressure to the inclined planes of the locking plate (30) and the other locking plate (30), the outer side protrusions of the locking plate (30) and the other locking plate (30) are positioned in the annular groove counterbored hole (26), and after the metal bonding liquid is solidified to obtain the implantation of the screw (29), the external thread (27) at the outer end of the screw (29) can be connected with screw holes of other workpieces (24) or other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158254.9A CN109702248B (en) | 2019-03-04 | 2019-03-04 | Reaming bit for workpiece blind hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158254.9A CN109702248B (en) | 2019-03-04 | 2019-03-04 | Reaming bit for workpiece blind hole |
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| Publication Number | Publication Date |
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| CN109702248A CN109702248A (en) | 2019-05-03 |
| CN109702248B true CN109702248B (en) | 2021-07-09 |
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| CN201910158254.9A Active CN109702248B (en) | 2019-03-04 | 2019-03-04 | Reaming bit for workpiece blind hole |
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| CN110497002B (en) * | 2019-10-06 | 2020-08-04 | 杭州长三角工贸有限公司 | Self-pressing reaming drill bit |
| CN112606109A (en) * | 2020-12-15 | 2021-04-06 | 梁绍丽 | Method for drilling T-shaped hole on furniture board |
| CN115255449A (en) * | 2022-09-27 | 2022-11-01 | 南通诚泰机械制造有限公司 | Reaming device for drilling of hydraulic cylinder cover |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR707725A (en) * | 1930-03-18 | 1931-07-11 | Improvements to the means for the execution of boreholes for enlarged base seals | |
| CN2477707Y (en) * | 2001-05-11 | 2002-02-20 | 河北省建筑勘察研究院 | Base enlarging appts. for club-footed pile for fundation construction |
| CN202209146U (en) * | 2011-07-11 | 2012-05-02 | 成都四海岩土工程有限公司 | Reamer |
| CN204552620U (en) * | 2015-03-01 | 2015-08-12 | 方军 | A kind of reaming bit |
| CN105672311B (en) * | 2016-03-28 | 2018-02-02 | 重庆建工市政交通工程有限责任公司 | The construction method of anchor pole |
| CN106958419B (en) * | 2017-05-27 | 2018-08-17 | 河南理工大学 | Mine anchor rod hole screw drive formula reaming drilling rod |
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