CN218533088U

CN218533088U - Tool bit for machining threads

Info

Publication number: CN218533088U
Application number: CN202222844855.5U
Authority: CN
Inventors: 李才锡; 范黎恭
Original assignee: Hanstow Shanghai Fluid Technology Co ltd
Current assignee: Hanstow Shanghai Fluid Technology Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-02-28
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a tool bit of processing screw thread for automated processing technical field, include: the cutter body, the blade pressing sleeve, the sliding sleeve and the adjusting threaded sleeve; the adjusting screw sleeve is sleeved on the outer side of the mounting hole of the driving shaft, which is far away from the driving piece, and a convex part is arranged on the outer side of the adjusting screw sleeve, which is far away from the driving piece; one end of the blade pressing sleeve is sleeved outside the blade mounting groove, and the other end of the blade pressing sleeve is arranged outside the adjusting screw sleeve far away from the driving piece and is provided with a groove; the sliding sleeve is sleeved on the outer side of the blade pressing sleeve far away from the driving piece and used for driving the blade pressing sleeve to move to a position where the protruding part of the adjusting screw sleeve is embedded into the groove of the blade pressing sleeve when the sliding sleeve slides; the adjusting threaded sleeve is used for keeping the position outside the mounting hole of the driving shaft when the protruding part of the adjusting threaded sleeve is embedded into the groove of the blade pressing sleeve, and the blade pressing sleeve is locked, so that when the driving piece drives the cutter head to rotate, the blade pressing sleeve compresses the threaded blade mounted in the blade mounting groove, the driving piece drives the cutter head to be formed in a one-time machining mode, and the efficiency of thread machining can be improved.

Description

Tool bit for machining threads

Technical Field

This application reaches automated processing technical field in fact, especially relates to a tool bit of processing screw thread.

Background

In the prior art, when threads of pipe fittings with pipe diameters of 1/4 inch, 3/8 inch, 9/16 inch, 3/4 inch or 1 inch are processed under the pressure of more than 140MPa, lathe turning is mainly used for the thread processing of the pipe fittings in the connection of medium and high pressure pipe fittings, and manual threading tools can be used for 1/4 inch, 3/8 inch and 9/16 inch.

Wherein, when current manual die instrument processing screw thread, when the pipe diameter of pipe fitting exceeded 9/16 inches, the difficult required moment of torsion that provides the processing screw thread of manpower, and manual die instrument is difficult to process, and the processing step of manual die instrument is for eating the sword back of entering, processes two rings at every turn, need prolong the reverse rotation round, makes inside iron fillings discharge just can process next round screw thread, and manual die process time is long, and machining efficiency is low. Whereas existing lathe turning includes: machining threads by using a common lathe and machining threads by using a numerical control lathe; when the common lathe is used for machining threads, tool setting and manual feeding are needed, and one thread needs to be turned for several times, so that the machining time is long, the machining of one section of thread can be completed in a long time, and the machining efficiency is low; when the numerical control lathe is used for machining threads, programming and tool setting are needed, one thread needs to be turned for several times, the machining time is long, and the machining efficiency is low.

Therefore, the conventional manual threading tool for machining threads and lathe turning for machining threads needs more complicated steps, and the thread machining efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tool bit of processing screw thread can improve the efficiency of processing screw thread effectively.

The utility model provides a tool bit of processing screw thread, include: the cutter body, the blade pressing sleeve, the sliding sleeve and the adjusting threaded sleeve;

one end of the cutter body is provided with a blade mounting groove, the other end of the cutter body is provided with a driving shaft mounting hole, the blade mounting groove is used for mounting a threaded blade, and the driving shaft mounting hole is used for mounting a driving piece for driving the cutter head to rotate;

the adjusting threaded sleeve is sleeved on the outer side, far away from the driving piece, of the driving shaft mounting hole, can move on the outer side of the driving shaft mounting hole based on the extending direction of the driving shaft mounting hole, and a protruding portion is arranged on the outer side, far away from the driving piece, of the adjusting threaded sleeve;

one end of the blade pressing sleeve is sleeved on the outer side of the blade mounting groove, and the other end of the blade pressing sleeve is arranged on the outer side, far away from the driving piece, of the adjusting threaded sleeve and provided with a groove;

the sliding sleeve is sleeved on the outer side of the blade pressing sleeve far away from the driving piece and used for driving the blade pressing sleeve to move to a position where the protruding part of the adjusting threaded sleeve is embedded into the groove of the blade pressing sleeve when the sliding sleeve slides;

the adjusting threaded sleeve is used for keeping the position of the outer side of the driving shaft mounting hole when the protruding portion of the adjusting threaded sleeve is embedded into the groove of the blade pressing sleeve, and locking the blade pressing sleeve, so that when the driving piece drives the cutter head to rotate, the blade pressing sleeve is tightly pressed on the threaded blade mounted in the blade mounting groove.

Further, the cutter body also comprises a spring pin mounting hole, a blade spring pin, a blade spring, a combined screw and a screw hole;

the spring pin mounting hole is arranged at the first end, close to the driving shaft mounting hole, of the blade mounting groove, the screw hole penetrates through the first end, and the extending direction of the spring pin mounting hole is perpendicular to the penetrating direction of the screw hole;

the blade spring is arranged in the spring pin mounting hole, one end of the blade spring abuts against the inner wall of the spring pin mounting hole, and the other end of the blade spring abuts against the guide hole of the blade spring pin;

the combined screw is screwed in the screw hole, and the protruding part of the combined screw penetrating through the screw hole abuts against the notch of the blade spring pin.

Further, the cutter body still includes: first spring mounting hole, the blade is pressed and is overlapped and still includes: a second spring mounting hole;

the first spring mounting hole and the second spring mounting hole are correspondingly arranged, and a pressing sleeve spring is arranged between the first spring mounting hole and the second spring mounting hole;

and one end of the pressing sleeve spring is abutted against the inner hole wall of the first spring mounting hole, and the other end of the pressing sleeve spring is abutted against the inner hole wall of the second spring mounting hole, so that the pressing sleeve spring is used for ejecting the blade pressing sleeve from the cutter body.

Furthermore, a first thread is arranged on the outer side of a driving shaft mounting hole of the cutter body, and a second thread is arranged on the inner side, close to the driving shaft mounting hole, of the adjusting screw sleeve;

the first thread is matched with the second thread and used for enabling the adjusting threaded sleeve to move on the outer side of the driving shaft mounting hole through screwing and unscrewing threads.

Further, the blade pressing sleeve further comprises: a bevel opening;

the bevel opening is formed in one end, close to the blade mounting groove, of the blade pressing sleeve;

the bevel is used for, when the threading blade install in during the blade mounting groove, the butt threading blade is worked as the blade is pressed the cover and is followed and be close to during the direction of blade mounting groove removes, the bevel is right the extrusion force is applyed to the threading blade, the drive threading blade removes to being close to first rotation axis, first rotation axis does the tool bit is treated the processing pipeline and is add the center pin of rotary motion.

Further, the adjusting screw sleeve comprises: the guide plate, the fixing plate spring and the mounting groove are arranged on the base;

the guide sheet and the fixing sheet are mounted in the mounting groove;

the guide piece is provided with a third spring mounting hole, the fixed piece is provided with a fourth spring mounting hole, and the fixed piece spring is arranged between the third spring mounting hole and the fourth spring mounting hole;

the blade pressing sleeve is provided with a groove, the blade pressing sleeve is provided with a protruding step, the protruding step is arranged on the groove, the blade pressing sleeve is provided with a spring, the spring is arranged on the spring, the blade pressing sleeve slides to the groove of the blade pressing sleeve and corresponds to the protruding step of the fixing sheet, and the protruding step of the fixing sheet is embedded into the groove of the blade pressing sleeve.

Further, the method also comprises the following steps: the ball, the blade is pressed the cover and is still included: a tapered bore, the sliding sleeve comprising: a slope;

the ball is arranged between the conical hole and the slope, the conical hole is arranged in the groove of the blade pressing sleeve, and Kong Dingkao of the conical hole is close to the fixing piece;

the slope is used for pushing the ball to move towards the top of the conical hole when the sliding sleeve slides, so that the ball pushes the raised step of the fixing piece to be away from the groove of the blade pressing sleeve.

Furthermore, a first jackscrew mounting hole is formed in the hole wall of the driving shaft mounting hole and used for mounting a first tightening screw, and a protruding part of the first tightening screw abuts against the driving piece to tightly press the cutter body against the driving piece;

the mantle wall of adjustment swivel nut is equipped with second jackscrew mounting hole, second jackscrew mounting hole is used for installing the tight screw in second top, just the bulge top of the tight screw in second top connect with the outer wall of drive shaft mounting hole, will adjustment swivel nut top tightly extremely the drive shaft mounting hole.

Further, the adjusting screw sleeve further comprises: the pressing sleeve comprises a pressing sleeve stop block, a stop block mounting groove, a stop block fixing pin, a fixing pin mounting hole, a stop block spring and a stop block spring mounting hole;

the stop block mounting groove is formed in one end, away from the blade pressing sleeve, of the adjusting screw sleeve, the fixing pin mounting hole is formed in the side wall of the stop block mounting groove, and the stop block fixing pin is mounted in the fixing pin mounting hole;

the pressing sleeve stop block is arranged in the stop block mounting groove and is rotatably mounted on the stop block fixing pin;

the stop block spring mounting hole is formed in one end of the stop block mounting groove, one end of the stop block spring is mounted in the stop block spring mounting hole, and the other end of the stop block spring is connected with the pressing sleeve stop block;

the stop block spring is used for applying elastic force to the pressing sleeve stop block to drive one end of the pressing sleeve stop block to rotate in the direction away from the stop block mounting groove by taking the stop block fixing pin as a center axis, so that one end of the pressing sleeve stop block protrudes out of the stop block mounting groove.

Further, the cutter body still includes: a cutter body pressing block and a pressing block screw;

the cutter body pressing block is arranged on one side, away from the driving shaft mounting hole, of the blade mounting groove;

the pressing block screw is arranged on the cutter body pressing block and used for locking the cutter body pressing block to the cutter body.

According to the technical solution provided by the utility model, the utility model has the advantages of it is following:

the utility model discloses a tool bit includes: the cutter body, the blade pressing sleeve, the sliding sleeve and the adjusting threaded sleeve; the adjusting screw sleeve is sleeved on the outer side of the mounting hole of the driving shaft, which is far away from the driving piece, and a convex part is arranged on the outer side of the adjusting screw sleeve, which is far away from the driving piece; one end of the blade pressing sleeve is sleeved outside the blade mounting groove, and the other end of the blade pressing sleeve is arranged outside the adjusting threaded sleeve far away from the driving piece and provided with a groove; the sliding sleeve is sleeved on the outer side of the blade pressing sleeve far away from the driving piece and used for driving the blade pressing sleeve to move to a position where the protruding part of the adjusting screw sleeve is embedded into the groove of the blade pressing sleeve when the sliding sleeve slides; the adjusting screw sleeve is used for keeping the position outside the mounting hole of the driving shaft when the bulge of the adjusting screw sleeve is embedded into the groove of the blade pressing sleeve, and the blade pressing sleeve is locked, so that when the driving piece driving tool bit rotates, the blade pressing sleeve compresses the threaded blade installed in the blade mounting groove, the driving piece driving tool bit is formed in a one-time machining mode, the machining of one thread can be completed in a short time, and the efficiency of thread machining can be improved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural view of a cutter head disclosed by the present invention;

FIG. 2 is a B-B cross-sectional view of a tool bit disclosed herein;

FIG. 3 isbase:Sub>A cross-sectional view A-A ofbase:Sub>A tool bit according to the present disclosure;

FIG. 4 is a C-C cross-sectional view of a tool bit disclosed herein;

fig. 5 is a schematic structural view of a cutter body disclosed in the present invention;

fig. 6 is a schematic structural view of another cutter body disclosed in the present invention;

fig. 7 is a schematic structural view of a blade pressing sleeve disclosed by the present invention;

fig. 8 is a schematic structural view of a sliding sleeve disclosed in the present invention;

fig. 9 is a schematic structural view of an adjusting screw sleeve disclosed in the present invention;

fig. 10 is a schematic structural view of another adjusting screw sleeve disclosed in the present invention;

FIG. 11 is a schematic view of a blade spring pin according to the present disclosure;

fig. 12 is a schematic structural view of a guide plate disclosed in the present invention;

fig. 13 is a schematic structural view of a fixing sheet disclosed in the present invention;

fig. 14 is a schematic structural view of a press sleeve stopper disclosed in the present invention;

fig. 15 is an assembly schematic view of a cutter head and a threading blade disclosed in the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 application.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the prior art, when threads of 1/4 inch, 3/8 inch, 9/16 inch, 3/4 inch or 1 inch pipe fittings with the pipe diameter of 140Mpa or more are processed, lathe turning is mainly used for the threads of the pipe fittings in the connection of medium and high pressure pipe fittings, and manual threading tools can be used for 1/4 inch, 3/8 inch and 9/16 inch. However, the conventional manual threading tool for machining threads and lathe turning for machining threads requires complicated steps and has low efficiency in machining threads. Therefore, the utility model provides a tool bit of processing screw thread can improve the efficiency of processing screw thread, as shown in FIG. 1, specifically as follows:

the utility model provides a tool bit, include: the cutter body 1, the blade pressing sleeve 2, the sliding sleeve 3 and the adjusting threaded sleeve 4; one end of the cutter body 1 is provided with a blade mounting groove, the other end of the cutter body is provided with a driving shaft mounting hole, the blade mounting groove is used for mounting a threaded blade, and the threaded blade can slide in the blade mounting groove; the driving shaft mounting hole is used for mounting a driving piece for driving the cutter head to rotate, and it can be understood that the driving shaft mounting hole can be used for mounting a driving shaft and can also be directly mounted on a motor shaft, that is, the driving piece can be a driving shaft and can also be a motor shaft, and the specific point is not limited here. The adjusting threaded sleeve 4 is sleeved on the outer side of the mounting hole of the driving shaft away from the driving piece, namely the adjusting threaded sleeve 4 is sleeved on the outer side of the cutter body 1; the adjusting screw sleeve 4 can move outside the driving shaft mounting hole based on the extending direction of the driving shaft mounting hole, it can be understood that the adjusting screw sleeve 4 can slide outside the cutter body 1, and the adjusting screw sleeve 4 can stop moving and lock at any position, specifically, the adjusting screw sleeve 4 can be locked by a screw or a stopper, and the details are not limited herein. The outer side of the adjusting screw sleeve 4 far away from the driving piece is provided with a convex part, namely, one side of the adjusting screw sleeve 4 far away from the driving shaft mounting hole is provided with a convex part. One end of the blade pressing sleeve 2 is sleeved outside the blade mounting groove, and the blade mounting groove can also be understood as a notch formed by the cutter body 1 and the blade pressing sleeve 2 in a surrounding way; the other end of the blade pressing sleeve 2 is arranged on the outer side of the adjusting threaded sleeve 4 far away from the driving part and is provided with a groove, and the other end of the blade pressing sleeve 2 is arranged close to the adjusting threaded sleeve 4 and can slide on the adjusting threaded sleeve 4. The sliding sleeve 3 is sleeved on the outer side of the blade pressing sleeve far away from the driving piece, and the sliding sleeve 3 is used for driving the blade pressing sleeve 2 to move to a position where the protruding part of the adjusting screw sleeve 4 is embedded into the groove of the blade pressing sleeve 2 when sliding; it can be understood that the bulge of the adjustment screw sleeve 4 is closer to the blade mounting notch of the cutter body 1 relative to the groove of the blade pressing sleeve 2, when the sliding sleeve 3 is pushed to move toward the blade mounting notch (threaded blade side), when the sliding sleeve 3 is tightly attached to the blade pressing sleeve 2, the sliding sleeve 3 and the blade pressing sleeve 2 can be pushed simultaneously, when the groove of the blade pressing sleeve 2 moves to the bulge of the adjustment screw sleeve 4, the bulge of the adjustment screw sleeve 4 is embedded into the groove of the blade pressing sleeve 2, so that the blade pressing sleeve 2 is locked to the adjustment screw sleeve 4. The adjusting screw sleeve 4 is used for keeping the position outside the mounting hole of the driving shaft when the protruding part of the adjusting screw sleeve 4 is embedded into the groove of the blade pressing sleeve 2, and locking the blade pressing sleeve 2, so that when the driving piece drives the cutter head to rotate, the blade pressing sleeve 2 compresses the thread blade mounted in the blade mounting groove. It will be appreciated that the position of the blade pressing sleeve 2 is not changed in a state where the position of the adjusting screw sleeve 4 is not changed. After the blade pressing sleeve 2 presses the threaded blade, in the use process of the thread cutter head, the blade is stressed on the cutter body 1 and the blade pressing sleeve 2, and the position of the blade pressing sleeve 2 cannot be changed under the condition that the position of the adjusting screw sleeve 4 is not changed, so that the thread is machined.

It can be seen that, the utility model discloses a tool bit includes: the cutter body, the blade pressing sleeve, the sliding sleeve and the adjusting threaded sleeve; the adjusting screw sleeve is sleeved on the outer side of the mounting hole of the driving shaft, which is far away from the driving piece, and a convex part is arranged on the outer side of the adjusting screw sleeve, which is far away from the driving piece; one end of the blade pressing sleeve is sleeved outside the blade mounting groove, and the other end of the blade pressing sleeve is arranged outside the adjusting screw sleeve far away from the driving piece and is provided with a groove; the sliding sleeve is sleeved on the outer side of the blade pressing sleeve far away from the driving piece and used for driving the blade pressing sleeve to move to a position where the protruding part of the adjusting screw sleeve is embedded into the groove of the blade pressing sleeve when the sliding sleeve slides; the adjustment swivel nut is used for, when the bellying embedding blade of adjustment swivel nut pressed the recess of cover, kept the position in the outside of drive shaft mounting hole, and locking blade pressed the cover to when making driving piece drive tool bit rotatory, the blade pressed the cover and compressed tightly the screw thread blade of installing in the blade mounting groove, driving piece drive tool bit disposable processing shaping can realize that the processing of a screw thread is accomplished to the short time, can improve the efficiency of processing screw thread. In an implementation mode, the method is mainly used for processing the connecting threads of 1/4 ', 3/8', 9/16 ', 3/4 and 1' pipe fittings with the pressure of more than 140MPa, is arranged on corresponding equipment, can realize automatic thread processing, can realize the processing of threads of a high-pressure pipe in a short time after being arranged on the corresponding equipment, and can greatly improve the efficiency. Be different from current manual die instrument and lathe work, the main spare part of special processing equipment, after assembling into complete equipment, can effectively solve the problem that machining efficiency is low of special CT screw thread in the current trade, be used for can realizing using motor drive to process the screw thread fast on the equipment, one-time processing takes shape, improves production efficiency greatly, can realize processing one section screw thread in the length of predetermineeing time, it is short when should predetermineeing, generally for 5 seconds or 6 seconds, it is long when having shortened production greatly.

Further, referring to fig. 2, 5, 6 and 11, the cutter body 1 further includes a spring pin mounting hole 20, a blade spring pin 7, a blade spring 8, a combination screw 6 and a screw hole 24; the spring pin mounting hole 20 is arranged at a first end, close to the driving shaft mounting hole 25, of the blade mounting groove 19, the screw hole 24 is arranged at the first end in a penetrating mode, and the extending direction of the spring pin mounting hole 20 is perpendicular to the penetrating direction of the screw hole 24; the blade spring 8 is arranged in the spring pin mounting hole 20, one end of the blade spring 8 abuts against the inner wall of the spring pin mounting hole 20, and the other end of the blade spring 8 abuts against the guide hole 38 of the blade spring pin 7; the combination screw 6 is screwed into the screw hole 24, and the projection of the combination screw 6 penetrating through the screw hole 24 abuts against the notch 39 of the insert spring pin 8, and after the threading insert is mounted in the insert mounting groove 19, the threading insert also abuts against the notch 39 of the insert spring pin 8. It will be appreciated that the combination screw 6 is mounted in the screw hole 24, preventing the blade spring pin 7 from falling; blade spring pin 7: the guide hole 38 provided with the blade spring 8 is used for installing the blade spring 8, and the notch 39 is used for clamping the combined screw 6 and the pin shaft of the threaded blade; the blade spring 8 is installed in the guide hole 38 and can spring open the screw blade after the blade pressing sleeve 2 is withdrawn. A blade spring pin mounting hole 20 is designed below the blade mounting groove 19, after the blade spring pin 7 and the blade spring 8 are mounted, the combined screw 6 is screwed into the screw hole 24 to press one side of the blade spring pin 7, so that the blade spring pin 7 is prevented from falling off, and after the blade is integrally mounted, the blade automatically bounces off in the blade mounting groove 19 and is restrained from sliding in the other direction when the blade is locked.

Further, with reference to fig. 7, the cutter body 1 further includes: the first spring mounting hole 23, the blade pressing sleeve 2 further includes: second spring mounting holes 26; the first spring mounting hole 23 and the second spring mounting hole 26 are correspondingly arranged, and a pressing sleeve spring 9 is arranged between the first spring mounting hole 23 and the second spring mounting hole 26; one end of the pressing sleeve spring 9 abuts against the inner hole wall of the first spring mounting hole 23, and the other end abuts against the inner hole wall of the second spring mounting hole 26. It can be understood that the cutter body 1 is provided with a first spring mounting hole 23 for mounting the pressing sleeve spring 9, the blade pressing sleeve 2 is provided with a second spring mounting hole 26 matched with the cutter body 1, the pressing sleeve spring 9 is mounted on the first spring mounting hole 23 of the cutter body 1 and the second spring mounting hole 26 of the blade pressing sleeve 2, after the pressing sleeve spring 9 is mounted, the blade pressing sleeve 2 can be automatically ejected under the action of the pressing sleeve spring 9, and it can be understood that the pressing sleeve spring 9 is mounted in the first spring mounting hole 23 of the cutter body 1 and the second spring mounting hole 26 of the blade pressing sleeve 2, and can automatically eject the blade pressing sleeve 2.

Further, referring to fig. 9, the outer side of the driving shaft mounting hole 25 of the cutter body 1 is provided with a first thread 21, and the inner side of the adjusting screw sleeve 4 close to the driving shaft mounting hole 25 is provided with a second thread 33; the first screw thread 21 cooperates with the second screw thread 33 for moving the adjusting screw sleeve 4 on the outside of the drive shaft mounting hole 25 by screwing and unscrewing the screw threads. It can be understood that the cutter body 1 is provided with a first thread 21 which is matched with the adjusting screw sleeve 4, the adjusting screw sleeve 4 is provided with a second thread 33 which is matched with the cutter body 1, and the adjusting screw sleeve 4 can move on the cutter body 1 through screwing and unscrewing the threads on the cutter body 1.

Further, current lathe work still includes thread rolling machine roll extrusion processing screw thread, however during thread rolling machine roll extrusion processing screw thread, the screw surface quality of processing is poor, and the machining precision is not high, and it is inconvenient to change the blade, and the blade is bulky, and is with high costs. Therefore, in connection with fig. 7, the blade press sleeve 2 further includes: a bevel 27; the bevel opening 27 is arranged at one end of the blade pressing sleeve 2 close to the blade mounting groove 19; the blade pressing sleeve 2 is provided with an inclined opening 27 matched with the blade, so that the threaded blade can be enabled to be sprung or tightened on the blade mounting groove 19 of the blade body 1 when the blade pressing sleeve 2 slides on the blade body 1, specifically, the inclined opening 27 is used for abutting against the threaded blade when the threaded blade is mounted in the blade mounting groove 19, when the blade pressing sleeve 2 moves along the direction close to the blade mounting groove 19, the inclined opening 27 applies extrusion force to the threaded blade to drive the threaded blade to move towards a first rotating shaft, and the first rotating shaft is a central shaft of the tool bit for performing rotating motion on a pipeline to be processed; when the blade pressing sleeve 2 is moved in a direction away from the blade mounting groove 19, the screw blade is moved away from the first rotation axis based on the force applied by the blade spring 8. When the adjusting screw sleeve 4 can move on the cutter body 1 through screwing and unscrewing threads, the position of the blade pressing sleeve 2 when the threaded blade is tightened can be fixed, and then the position of the beveled opening 27 of the blade pressing sleeve 2 when the threaded blade is tightened is adjusted, so that the depth of the threaded blade for machining threads can be adjusted. Because the thread processing depth of the thread cutter head is adjustable, the processing precision of the whole installation size of the thread blade can be greatly reduced, and the production cost of the worn blade can be greatly reduced.

Further, referring to fig. 3, 9, 12 and 13, the adjusting screw 4 includes: a guide plate 10, a fixing plate 11, a fixing plate spring 12 and a mounting groove 32; the guide piece 10 and the fixing piece 11 are mounted in the mounting groove 32; the guide sheet is provided with a third spring mounting hole 41, the fixed sheet is provided with a fourth spring mounting hole 43, and the fixed sheet spring 12 is arranged between the third spring mounting hole 41 and the fourth spring mounting hole 43; it can be understood that the adjusting screw sleeve 4 is provided with the guide plate 10 and the mounting groove 32 of the fixing plate 11, so that the adjusting screw sleeve 4 can pass through the inner hole 29-1 of the blade pressing sleeve 2 after the guide plate 10 and the fixing plate 11 are mounted; the blade pressing sleeve 2 is provided with a groove 28 which enables the fixing piece 11 to be bounced, so that the fixing piece 11 can be bounced in the groove 28 of the blade pressing sleeve 2 under the action of the fixing piece spring 12. The fixing piece spring 12 is used for ejecting the fixing piece 11 when the blade pressing sleeve 2 slides to the position that the groove 28 of the blade pressing sleeve 2 corresponds to the raised step 42 of the fixing piece 11, so that the raised step 42 of the fixing piece 11 is embedded into the groove 28 of the blade pressing sleeve 2, and at the moment, the blade pressing sleeve 2 is locked to the adjusting screw sleeve 4. Specifically, the guide vane 10 is installed in the installation groove 32 of the adjusting screw sleeve 4 and then integrally installed with the adjusting screw sleeve 4 into the inner hole 29-1 of the blade pressing sleeve 2; and a third spring mounting hole 41 is opened, the fixing piece spring 12 is mounted in the third spring mounting hole 41, and the guide piece 10 is further provided with a boss 40 for guiding and positioning when the guide piece 10 is mounted. The fixed plate 11 is provided with a fourth spring mounting hole 43, and the fixed plate spring 12 is mounted in the fourth spring mounting hole 43; the design is provided with a raised step 42, when the blade pressing sleeve 2 slides and the groove 28 of the blade pressing sleeve 2 is under the raised step 42 of the fixing sheet 11, the fixing sheet spring 12 can pop up the fixing sheet 11, so that the raised step 42 of the fixing sheet 11 is embedded into the groove 28 of the blade pressing sleeve 2, thereby locking the sliding of the blade pressing sleeve 2. The fixing plate spring 12 is installed in the third spring installation hole 41 and the fourth spring installation hole 43 for bouncing up the fixing plate 11.

Further, with reference to fig. 7 and 8, the utility model discloses a tool bit still includes: ball 5, blade pressure cover 2 still includes: the tapered hole 29, the sliding sleeve 3 includes: a ramp 31; the spherical ball 5 may be a steel ball or an iron ball, and is not limited herein. The ball 5 is disposed between the tapered hole 29 and the slope 31, the tapered hole 29 is disposed in the groove 28 of the blade pressing sleeve 2, specifically, the tapered hole 29 is disposed at one end of the groove 28 away from the cutter body 1, and Kong Dingkao of the tapered hole 29 is close to the fixing piece 11. The slope 31 is used for pushing the ball 5 to move towards the top of the tapered hole 29 when the sliding sleeve 3 slides, so that the ball 5 pushes the raised step 42 of the fixing piece 11 away from the groove 28 of the blade pressing sleeve 2, and the blade pressing sleeve 2 is separated from the adjusting screw sleeve 4. It can be understood that, the sliding sleeve 3 is provided with a slope 31 for sliding the round ball 5, when the sliding sleeve 3 slides, the round ball 5 is pushed by the slope 31 of the sliding sleeve 3 in the tapered hole 29 to move up and down along the tapered hole 29, so that the round ball 5 can move up and down in the tapered hole 29 of the blade pressing sleeve 2, and when the round ball 5 is pushed by the slope 31 of the sliding sleeve 3 to move up and down along the tapered hole 29 of the blade pressing sleeve 2, the fixing piece 11 can be jacked up to compress the fixing piece spring 12, so that the fixing piece 11 is reset. It can be understood that the sliding sleeve 3 is also provided with a sliding groove 30 for connecting with automatic thread processing equipment, so that the sliding sleeve 3 can slide when the automatic thread processing equipment is operated; when the sliding sleeve 3 slides towards the blade side along the blade pressing sleeve 2, the blade pressing sleeve 2 can be driven to slide towards the blade side, so that the thread blade is tightened.

In an implementation mode, when the slope 31 of the sliding sleeve 3 moves to the position under the tapered hole 29 of the blade pressing sleeve 2, the steel ball 5 in the tapered hole 29 drops on the slope 31 of the sliding sleeve 3, the blade pressing sleeve 2 and the sliding sleeve 3 continue to move towards the blade side, when the groove 28 of the blade pressing sleeve 2 moves to the protruding step 42 of the fixing plate 11, the fixing plate spring 12 bounces the fixing plate 11, so that the protruding step 42 of the fixing plate 11 is embedded into the groove 28 of the blade pressing sleeve 2, most of the fixing plate 11 is installed on the installation groove 32 of the adjusting screw sleeve 4, under the condition that the position of the adjusting screw sleeve 4 is not changed, the position of the blade pressing sleeve 2 cannot be changed, and the threaded blade is stressed on the blade pressing sleeve 2 to be locked, so that the threaded blade is fastened. Through a reasonable structure of the equipment, in a machining state, the threaded blade rotates to drive the workpiece to move, so that a clamping part of the workpiece props against the sliding sleeve 3 to move towards the opposite direction side of the blade (namely, the opposite direction of a blade mounting notch), or the blade rotates to drive the cutter head to move, so that the sliding sleeve 3 props against a clamping side part of the workpiece, so that the sliding sleeve moves towards the opposite direction side of the blade relative to the threaded blade, when the sliding sleeve 3 tends to move towards the opposite direction side of the blade, the steel ball 5 is jacked up by a slope 31 of the sliding sleeve 3 and moves upwards along a conical hole 29 of the blade pressing sleeve 2 to jack up the fixed plate 11, and when a raised step 42 of the fixed plate 11 is separated from a groove 28 of the blade pressing sleeve 2, the blade pressing sleeve 2 is released from a locking state of the adjusting screw sleeve 4; the blade pressing sleeve 2 is expanded towards the opposite direction of the blade under the spring force of the pressing sleeve spring 9. After the blade pressing sleeve 2 is propped open, the thread blade is propped open under the action of the blade spring 8, and the thread blade is bounced open after the thread of the workpiece is machined. It can be seen that the utility model discloses a tool bit can realize rapid tooling CT screw thread, and disposable turning takes shape, and the tool bit can be opened in the bullet of the length department of design automatically after the turning takes shape, can realize automatic bullet opening function after the processing of completion screw thread.

Further, in order to make the structure more stable during driving, as shown in fig. 5 and 10, a first jackscrew mounting hole 22 is provided on the wall of the driving shaft mounting hole 25, the first jackscrew mounting hole 22 is used for mounting a first jacking screw, and the protrusion of the first jacking screw is abutted against the driving member to jack the cutter body 1 against the driving member; it can be understood that, when the driving member is a motor, the first tightening screw is mounted in the first tightening screw mounting hole 22 for tightening, and the motor can be directly driven to drive the cutter head to rotate. The wall of the adjusting screw sleeve 4 is provided with a second jackscrew mounting hole 37, the second jackscrew mounting hole 37 is used for mounting a second jacking screw 16, and the convex part of the second jacking screw 16 is jacked to the outer wall of the driving shaft mounting hole 25, so that the adjusting screw sleeve 4 is jacked to the driving shaft mounting hole 25. It can be understood that the thread position of the adjusting screw sleeve 4 is designed with a second jackscrew mounting hole 37, and after the position of the adjusting screw sleeve 4 is determined, the second jacking screw 16 is mounted in the second jackscrew mounting hole 37 to jack the outer wall of the cutter body 1 tightly, so that the adjusting screw sleeve 4 can be locked to the outer wall of the cutter body 1 when not being displaced. It will be appreciated that the second tightening screw 16 is mounted in the second jackscrew mounting hole 37 of the adjustment screw boss 4, thereby preventing the adjustment screw boss 4 from slipping during use of the threading tool bit.

Further, with reference to fig. 4, 10 and 14, the adjusting screw sleeve 4 further includes: the pressing sleeve stopper 13, the stopper mounting groove 34, the stopper fixing pin 15, the fixing pin mounting hole 35, the stopper spring 14 and the stopper spring mounting hole 36; the stop block mounting groove 34 is arranged at one end of the adjusting screw sleeve 4 far away from the blade pressing sleeve 2, the fixing pin mounting hole 35 is arranged at the side wall of the stop block mounting groove 34, and the stop block fixing pin 15 is mounted in the fixing pin mounting hole 35; the pressing sleeve stopper 13 is arranged in the stopper mounting groove 34 and is rotatably mounted on the stopper fixing pin 15, i.e. the pressing sleeve stopper 13 can rotate around the stopper fixing pin 15. The stop block fixing pin 15 can be a common cylindrical pin, the pressing sleeve stop block 13 can rotate around the stop block fixing pin 15 after being installed, and the stop block fixing pin is not detached after being installed in a fixing pin installation hole 35 of the adjusting screw sleeve 4; the pressing sleeve stop block 13 can be designed into an arc-shaped piece and is provided with a stop block fixing pin hole 44, after the stop block fixing pin 15 is installed, the pressing sleeve stop block 13 rotates on the pressing sleeve stop block installation groove 34 of the adjusting threaded sleeve 4, and after reasonable size design, the pressing sleeve stop block 13 cannot rotate integrally away from the adjusting threaded sleeve 4 when rotating. A block spring mounting hole 36 is arranged at one end of the block mounting groove 34, one end of the block spring 14 is mounted in the block spring mounting hole 36, and the other end is connected with the pressing sleeve block 13; the stop spring 14 is mounted in the stop spring mounting hole 36 of the adjusting screw sleeve 4 and is used for bouncing the pressing sleeve stop 13, and the stop spring 14 can bounce the pressing sleeve stop 13 and partially block the ejection of the blade pressing sleeve 2 because the pressing sleeve stop 13 is designed to be incapable of being turned out integrally at the adjusting screw sleeve 4. The stopper spring 14 is configured to apply an elastic force to the sleeve stopper 13 to drive one end of the sleeve stopper 13 to rotate in a direction axially away from the stopper mounting groove 34 around the stopper fixing pin 15, so that one end of the sleeve stopper 13 protrudes out of the stopper mounting groove 34. It is understood that the pressing sleeve stopper 13 can be rotated about the stopper fixing pin 15 toward one end of the stopper spring 14 in the elastic direction after the stopper spring 14 is installed. The pressing sleeve stop 13 is used for limiting the position of the blade pressing sleeve 2 popped out by the pressing sleeve spring 9 when the cutter head does not need to replace the thread blade, and the blade pressing sleeve 2 popped out by the pressing sleeve spring 9 is abutted against one end of the pressing sleeve stop 13 which protrudes.

In an implementable mode, when the tool bit needs to disassemble and assemble the thread blade, under the state that the thread blade is bounced off, the pressing sleeve stop 13 is pressed down, the part bounced up by the stop spring 14 is pressed, the blade pressing sleeve 2 is continuously propped off under the spring force action of the pressing sleeve spring 9 until stopping, under the state, the blade pressing sleeve 2 is separated from the blade mounting groove 19, the thread blade can be easily taken out, and when the thread blade is re-installed, the blade pressing sleeve 2 can be reset to the blade bounced off state by pushing the knife sleeve 3. Due to the fact that machining precision of each pair of blades is inconsistent, the situation that the depth of the machined thread of the threaded blade which is newly installed is shallow or deep can occur, the cutter head can be in a cutter locking state by pushing the sliding sleeve 3 at the moment, the second tightening screw 16 is loosened, and the adjusting screw sleeve 4 can be rotated. When the adjusting screw sleeve 4 is far away from the blade side, the blade pressing sleeve 2 is locked on the adjusting screw sleeve 4 through the fixing piece 11, the blade pressing sleeve 2 is also far away from the blade side, and the thread blade pressing amount is reduced due to the fact that the angle of the inclined opening 27 matched with the blade is fixed by the blade pressing sleeve 2, and therefore the thread depth is reduced; when the adjusting screw sleeve 4 is close to the blade side, the position of the blade pressing sleeve 2 fixed by the fixing piece 11 is close to the blade side, the blade pressing sleeve 2 is close to the blade side, and the thread depth is increased because the angle of the bevel 27 matched with the blade is fixed by the blade pressing sleeve 2 and the blade, and the thread blade compression amount is increased. And the second puller screw 16 is locked after the depth is properly adjusted, so that the thread machining tool bit is prevented from adjusting the screw sleeve 4 to slip in the using process. Because the thread depth can be adjusted, the machining precision of the blade can be greatly reduced, and the production cost of the loss piece blade is effectively lowered.

Further, as shown in fig. 15, the cutter body 1 further includes: a cutter body pressing block 17 and a pressing block screw 18; the cutter body pressing block 17 is arranged on one side of the blade mounting groove 19 far away from the driving shaft mounting hole 25; the pressing block screw 18 is arranged on the cutter body pressing block 17 and used for locking the cutter body pressing block 17 to the cutter body 1. It will be appreciated that the cutter body pressing block 17 is mounted on top of the blade mounting slot of the cutter body 1 and locked thereto using a pressing block screw 18.

In the utility model, one tool bit can be adapted to various thread tools, and threads with different specifications can be processed by only changing the blade when in use, thereby reducing the production cost of equipment and reducing the volume of the equipment and the number of parts; and the functions are realized by adopting a full mechanical structure, and no influence is generated in severe environment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A tool bit for machining threads, comprising: the cutter body, the blade pressing sleeve, the sliding sleeve and the adjusting threaded sleeve;

one end of the blade pressing sleeve is sleeved outside the blade mounting groove, and the other end of the blade pressing sleeve is arranged outside the adjusting threaded sleeve far away from the driving piece and is provided with a groove;

2. The cutter head of claim 1, wherein the cutter body further comprises a spring pin mounting hole, a blade spring pin, a blade spring, a combination screw, and a screw hole;

the blade spring is arranged in the spring pin mounting hole, one end of the blade spring is abutted against the inner wall of the spring pin mounting hole, and the other end of the blade spring is abutted against the guide hole of the blade spring pin;

3. The cutter head of claim 1, wherein the cutter body further comprises: first spring mounting hole, the blade is pressed and is overlapped and still includes: a second spring mounting hole;

4. The cutter head of claim 1, wherein the cutter body has a first thread formed on an outer side of the driving shaft mounting hole, and the adjustment screw sleeve has a second thread formed on an inner side thereof adjacent to the driving shaft mounting hole;

5. The cutter head of claim 1 wherein said blade press sleeve further comprises: bevel connection;

6. The cutter head of claim 1 wherein said adjustment nut comprises: the guide plate, the fixing plate spring and the mounting groove are arranged on the base;

the guide sheet and the fixing sheet are mounted in the mounting groove;

7. The cutter head of claim 6 further comprising: the ball, the blade is pressed the cover and is still included: a tapered bore, the sliding sleeve comprising: a slope;

the slope is used for pushing the ball to move towards the hole top of the tapered hole when the sliding sleeve slides, so that the ball pushes the raised step of the fixing piece away from the groove of the blade pressing sleeve.

8. The cutter head according to claim 1, wherein the wall of the driving shaft mounting hole is provided with a first jackscrew mounting hole, the first jackscrew mounting hole is used for mounting a first tightening screw, and a convex part of the first tightening screw abuts against the driving member to tighten the cutter body against the driving member;

9. The cutter head of claim 1 wherein said adjustment nut further comprises: the pressing sleeve comprises a pressing sleeve stop block, a stop block mounting groove, a stop block fixing pin, a fixing pin mounting hole, a stop block spring and a stop block spring mounting hole;

the stop block mounting groove is formed in one end, far away from the blade pressing sleeve, of the adjusting screw sleeve, the fixing pin mounting hole is formed in the side wall of the stop block mounting groove, and the stop block fixing pin is mounted in the fixing pin mounting hole;

10. The cutter head of claim 1, wherein the cutter body further comprises: a cutter body pressing block and a pressing block screw;