CN218694645U - Upper joint thread blade fixing device - Google Patents

Abstract

The utility model relates to a screw blade technical field discloses a top connection screw blade fixing device, include handle of a knife, tool bit and fix the screw blade on the tool bit, be equipped with on the tool bit with screw blade assorted mounting groove, be equipped with in the mounting groove with screw blade on mounting hole assorted screw hole, mounting hole on the screw blade passes through set screw and is connected with the screw hole in the mounting groove, one side that the tool bit is located the mounting groove still is equipped with the housing screw who is used for compressing tightly the screw blade, housing screw passes through the housing screw mounting hole on the tool bit and is connected with the tool bit, has and can prevent that set screw is not hard up, improves screw blade life, improves the effect of screw thread processingquality.

Description

Upper joint thread blade fixing device

Technical Field

The utility model relates to a threading blade technical field, in particular to top connection threading blade fixing device.

Background

Recently, the development of deep and high pressure drilling in oil and gas fields to be excavated has been advanced, and along with this, high performance requirements have been placed on threaded joints used for oil country tubular goods due to sealability and durability.

The top connection in the oil well instrument pipe string generally adopts Russian mark OTTM screw thread, need realize airtight, because the screw thread machining error has great influence to the sealing performance of screw thread, consequently, how to reduce machining error and improve screw thread sealing performance is one of the difficult problems that current machining technology needs key attack and conquer. The threading tool is one of the most widely used tools in thread cutting, belongs to a forming tool, the shape of a cutting part of the threading tool is matched with a groove of a thread profile, and the working angle of the threading tool is directly related to the profile angle and the profile precision of a turned thread during thread turning, so that the sealing performance of the thread is influenced. In order to ensure the machining precision, the whole cutter needs to be detached and ground by regularly stopping to ensure the machining precision, and once the blade is damaged, the whole cutter is scrapped, so that the cutter is not economical.

In order to solve the problems, a detachable blade structure is generally adopted, once the blade is broken or abraded, the cutter can be recovered as before only by replacing the blade, the cutter replacing efficiency is high, and the cost is greatly reduced. However, the blade of the conventional detachable threading tool is generally detachably connected with the tool bar through the fixing screw, and the blade is easily subjected to small vibration due to large force in the cutting process, so that the fixing screw is loosened in the past, and the problems of reduction of thread machining precision or damage to the blade and the compression screw are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a top connection thread blade fixing device has and can prevent that set screw is not hard up, improves thread blade life, improves the effect of screw thread processingquality.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a top connection thread blade fixing device, includes handle of a knife, tool bit and fixes the thread blade on the tool bit, be equipped with on the tool bit with thread blade assorted mounting groove, be equipped with in the mounting groove with thread blade on mounting hole assorted screw hole, the mounting hole on the thread blade passes through set screw and is connected with the screw hole in the mounting groove, one side that the tool bit is located the mounting groove still is equipped with the housing screw that is used for compressing tightly the thread blade, housing screw passes through the housing screw mounting hole on the tool bit and is connected with the tool bit.

Through adopting the above technical scheme, thread blade sets up in the mounting groove, make the mounting groove can carry out circumference spacing to thread blade, make thread blade can fix a position on the tool bit fast, thread blade's installation effectiveness has not only been improved, and can also effectively guarantee that the angle after thread blade installs is stable all the time, thereby effectively guarantee the processingquality of screw thread, set screw is used for fixing thread blade, make thread blade fixed can not become flexible or drop from the mounting groove in the mounting groove, hold-down screw is used for further compressing tightly thread blade, make thread blade stability in the cutting process better, effectively reduced because of thread blade vibration cause the not flexible probability of set screw, not only effectively improved threaded processingquality, and effectively improved the life of cutter.

The utility model discloses a further set up to: the fixing screw comprises a first threaded rod matched with the threaded hole and a first nut located at the upper end of the first threaded rod, and a locking device used for preventing the fixing screw from loosening is arranged on the first nut.

Through adopting above-mentioned technical scheme, set screw passes through screw rod one and screw hole cooperation, screws for nut one sticiss on the threading blade, thereby makes the threading blade can not become flexible or drop from the mounting groove, and the locking device that the nut set up is used for further preventing that set screw is not hard up on the nut one, thereby further improves the fixed effect of threading blade, has effectively improved the processingquality and the life of threading blade.

The utility model discloses a further set up to: the locking device is including setting up the installing port on nut one, be equipped with an adjusting block in the installing port, the one end of adjusting block is rotated through the bottom plane of pivot and installing port and is connected, the other end of the one end of adjusting block stretches out from the installing port, it is equipped with reset spring still to overlap in the pivot, reset spring's one end is fixed in the bottom surface of installing port, reset spring's the other end is fixed in the bottom of adjusting block, the installing port is close to the one side of the initial direction of set screw screwing and is supported tightly with the adjusting block.

Through adopting above-mentioned technical scheme, the regulating block realizes preventing the not hard up purpose of set screw through preventing that set screw is rotatory to the direction of unscrewing, simple structure, and processing is convenient, and reset spring guarantees through self elasticity that the regulating block is hugged closely with the one side that the installing port is close to the initial direction of set screw screwing all the time to guarantee locking effect.

The utility model discloses a further set up to: the compression screw includes two threaded rods with compression screw mounting hole complex threaded rod and two nuts that are located two upper ends of threaded rod, the cover is equipped with along keeping away from the portion that compresses tightly that the axis direction extends on the threaded rod two, the bottom of portion that compresses tightly is used for compressing tightly the screw blade, the portion that compresses tightly is located the opposite side that regulating block and installing port offset one side.

Through adopting above-mentioned technical scheme, housing screw passes through threaded rod one and mounting hole cooperation, locking, make nut two compress tightly the portion of compressing tightly, the portion of compressing tightly is not only used for further compressing tightly the screw blade after being compressed tightly, it is better to guarantee screw blade stability in the cutting process, effectively reduced because of the screw blade vibration and caused the not hard up probability of set screw, and simultaneously, still because compress tightly the opposite side of position in regulating block and installing port counterbalance one side, consequently, after the portion of compressing tightly supports one side at the regulating block, as long as set screw is rotatory towards the unscrewing direction, will extrude the regulating block, and the regulating block can be blockked by the portion of compressing tightly again, consequently, make set screw can't be rotatory towards the unscrewing direction, can only rotate towards the direction of screwing, thereby make set screw can not become flexible because of the vibration of screw blade, the thread machining precision and the life of the whole cutter of sword have further been improved.

The utility model discloses a further set up to: the knife handle and the knife head are integrally formed.

Through adopting above-mentioned technical scheme, handle of a knife and tool bit integrated into one piece can guarantee the stability of tool bit and handle of a knife structure, compare in welding or mechanical connection, cracked risk is littleer, and the precision is higher, not only can effectively guarantee the cutting performance and the life of screw thread blade, can also effectively guarantee the processingquality of screw thread.

The utility model has the advantages that:

1. the utility model discloses a set up threaded blade in the mounting groove, it is spacing to make the mounting groove carry out circumference to threaded blade, make threaded blade can fix a position on the tool bit fast, threaded blade's installation effectiveness has not only been improved, and the angle after the installation of threaded blade can also be effectively guaranteed is stable all the time, thereby effectively guarantee the processingquality of screw thread, set screw is used for fixing threaded blade, make threaded blade fix in the mounting groove and can not become flexible or drop from the mounting groove, set screw is used for further compressing tightly threaded blade, make threaded blade stability in the cutting process better, effectively reduced because of threaded blade vibration cause the not hard up probability of set screw, not only effectively improved threaded processingquality, and the life of cutter has still been effectively improved.

2. The utility model provides a set screw passes through screw rod one and screw hole cooperation, screws for nut one sticiss on the threading blade, thereby makes the threading blade can not become flexible or come off from the mounting groove, and the locking device that the nut set up on one is used for further preventing that set screw is not hard up, thereby further improves the fixed effect of threading blade, has effectively improved the processingquality and the life of threading blade.

3. The utility model provides a locking device prevents through the regulating block that set screw from realizing preventing the not hard up purpose of set screw to the direction rotation of unscrewing, simple structure, and processing is convenient, and reset spring guarantees through self elasticity among the locking device that the regulating block is close to one side of the initial direction of set screw screwing with the installing port all the time and hugs closely to guarantee locking effect.

4. The utility model discloses well housing screw passes through threaded rod one and the mounting hole cooperation, locking, make nut two compress tightly the portion, compress tightly portion two not only is used for further compressing tightly the screw thread blade after being compressed tightly, it is better to guarantee screw thread blade stability in the cutting process, effectively reduced because of the screw thread blade vibration cause the not hard up probability of set screw, and simultaneously, still because compress tightly the opposite side that the position lies in regulating block and installing port offset one side, consequently, support behind one side at the regulating block when the portion that compresses tightly, as long as set screw is rotatory towards the unscrewing direction, will extrude the regulating block, and the regulating block can stop by the portion that compresses tightly, consequently, make set screw can't be rotatory towards the unscrewing direction, can only be towards the direction of screwing, thereby make set screw can not become flexible because of the screw thread blade vibration, the life of the whole cutter of screw machining precision and sword has further been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is an explosion structure diagram of the upper joint screw blade fixing device of the present invention.

Fig. 2 is a schematic view of the installation structure of the blade and the blade head in the upper joint thread blade fixing device of the present invention.

Fig. 3 is a schematic view of the overall structure of the top connection threading blade fixing device of the present invention.

Fig. 4 is a schematic structural view of a locking device in the upper joint threading blade fixing device of the present invention.

In the figure, 1, a knife handle; 2. a cutter head; 3. a threading blade; 4. mounting grooves; 5. a threaded hole; 6. mounting holes; 7. a set screw; 71. a first threaded rod; 72. a first nut; 8. a compression screw; 81. a second threaded rod; 82. a second screw cap; 83. a pressing part; 9. a compression screw mounting hole; 10. a locking device; 101. an installation port; 102. an adjusting block; 103. a rotating shaft; 104. a return spring.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, a top connection thread blade fixing device comprises a handle 1, a head 2 and a thread blade 3 fixed on the head 2, wherein a mounting groove 4 matched with the thread blade 3 is formed in the head 2, a threaded hole 5 matched with a mounting hole 6 formed in the thread blade 3 is formed in the mounting groove 4, the mounting hole 6 formed in the thread blade 3 is connected with the threaded hole 5 formed in the mounting groove 4 through a fixing screw 7, a compression screw 8 used for compressing the thread blade 3 is further arranged on one side of the head 2 located in the mounting groove 4, and the compression screw 8 is connected with the head 2 through a compression screw mounting hole 9 formed in the head 2.

Further, the fixing screw 7 comprises a first threaded rod 71 matched with the threaded hole 5 and a first nut 72 positioned at the upper end of the first threaded rod 71, and the first nut 72 is provided with a locking device 10 for preventing the fixing screw 7 from loosening.

Further, the anti-loosening device 10 comprises a mounting hole 101 formed in the first nut 72, an adjusting block 102 is arranged in the mounting hole 101, one end of the adjusting block 102 is rotatably connected with the bottom plane of the mounting hole 101 through a rotating shaft 103, the other end of one end of the adjusting block 102 extends out of the mounting hole 101, a return spring 104 is further sleeved on the rotating shaft 103, one end of the return spring 104 is fixed to the bottom surface of the mounting hole 101, the other end of the return spring 104 is fixed to the bottom of the adjusting block 102, and one side, close to the screwing starting direction of the fixing screw 7, of the mounting hole 101 abuts against the adjusting block 102.

Further, the compression screw 8 comprises a second threaded rod 81 matched with the compression screw mounting hole 9 and a second nut 82 positioned at the upper end of the second threaded rod 81, a compression part 83 extending along the direction away from the axis is sleeved on the second threaded rod 81, the bottom of the compression part 83 is used for compressing the threaded blade 3, and the compression part 83 is positioned at the other side of one side where the adjusting block 102 is abutted to the mounting hole 101.

Further, the tool shank 1 and the tool bit 2 are integrally formed.

The utility model discloses a theory of operation:

when the threading blade 3 is installed, the threading blade is firstly placed in the mounting groove 4, then the fixing screw 7 is connected with the threaded hole 5 in the mounting groove 4 and is screwed in the direction of a in fig. 4, so that the first nut 72 of the fixing screw 7 is tightly pressed on the threading blade 3 to ensure that the threading blade 3 does not loosen or fall off from the mounting groove 4, then the pressing part 83 is sleeved on the pressing screw 8, the pressing part 83 is positioned on the other side of one side of the adjusting block 102, which is abutted against the mounting hole 101, and is abutted against the adjusting block 102, then the pressing screw 8 is screwed in the direction of B in fig. 4, so that the second nut 82 further tightly presses the pressing part 83 on the threading blade 3, after the threading blade 3 is further pressed by the pressing part 83, the stability of the threading blade 3 is better in the cutting process, the probability that the fixing screw 7 loosens due to the vibration of the threading blade 3 is effectively reduced, meanwhile, because the pressing part 83 is positioned on the other side of one side of the adjusting block 102, which is abutted against the mounting hole 101, when the pressing part 83 is tightly pressed against the adjusting block 102, the fixing screw 7 is loosened, and the adjusting block 102 is rotated, so long as the adjusting block 102 is rotated, the adjusting block 102 is not loosened, the adjusting block 102, so long as the adjusting block 102 is rotated, the adjusting block 4 is rotated, so that the adjusting block 4 is not loosened, and the adjusting block 4 is rotated, so long as the adjusting block 4 is rotated, the adjusting block 4 is loosened, therefore, the adjusting block 102 and the pressing part 83 are restricted with each other, so that the fixing screw 7 and the pressing screw 8 have good anti-loosening effect, and the thread machining precision and the service life of the whole cutter are further improved.

Claims (5)

1. The utility model provides a top connection threading blade fixing device which characterized in that: the thread cutting tool comprises a tool handle (1), a tool bit (2) and a thread blade (3) fixed on the tool bit (2), wherein a mounting groove (4) matched with the thread blade (3) is formed in the tool bit (2), a threaded hole (5) matched with a mounting hole (6) in the thread blade (3) is formed in the mounting groove (4), the mounting hole (6) in the thread blade (3) is connected with the threaded hole (5) in the mounting groove (4) through a fixing screw (7), a compression screw (8) used for compressing the thread blade (3) is further arranged on one side, located in the mounting groove (4), of the tool bit (2), and the compression screw (8) is connected with the tool bit (2) through a compression screw mounting hole (9) in the tool bit (2).

2. The upper joint threading blade fixing device according to claim 1, wherein: the fixing screw (7) comprises a first threaded rod (71) matched with the threaded hole (5) and a first nut (72) positioned at the upper end of the first threaded rod (71), and a locking device (10) used for preventing the fixing screw (7) from loosening is arranged on the first nut (72).

3. The upper joint threading blade fixing device according to claim 2, wherein: locking device (10) is including setting up installing port (101) on nut (72), be equipped with a regulating block (102) in installing port (101), the bottom plane rotation that pivot (103) and installing port (101) were passed through to the one end of regulating block (102) is connected, stretch out from installing port (101) the other end of the one end of regulating block (102), still the cover is equipped with reset spring (104) on pivot (103), the bottom surface at installing port (101) is fixed to the one end of reset spring (104), the bottom at regulating block (102) is fixed to the other end of reset spring (104), installing port (101) are close to one side and regulating block (102) the tight of initial direction of set screw (7) screwing.

4. A top-threading blade holding apparatus as claimed in claim 3, wherein: compression screw (8) include with compression screw mounting hole (9) complex threaded rod two (81) and be located two nut (82) of threaded rod (81) upper end, the cover is equipped with along keeping away from the portion of compressing tightly (83) that the axis direction extends on two threaded rod (81), the bottom that compresses tightly portion (83) is used for compressing tightly screw blade (3), it is located the opposite side of regulating block (102) and installing port (101) counterbalance one side to compress tightly portion (83).

5. The upper joint threading blade fixing device according to claim 1, wherein: the knife handle (1) and the knife head (2) are integrally formed.

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