CN210937511U

CN210937511U - Centering threading tool

Info

Publication number: CN210937511U
Application number: CN201921611583.6U
Authority: CN
Inventors: 聂强; 王文均
Original assignee: Lian Wei Auto Parts Chonqging Co ltd
Current assignee: Lian Wei Auto Parts Chonqging Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-07-07
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a centering mantle fiber instrument, including the die seat, be equipped with the installation cavity in this die seat, be provided with the die in this installation cavity, still be provided with hoop holding mechanism on the die seat, this hoop holding mechanism has the hole of holding, should hold the hole with the hole common center line of die, this hoop holding mechanism is located the front end face of the tapping direction of die is out-of-plane. Compared with the prior art, the beneficial effects of the utility model are that: the annular holding mechanism clamps the surface of the round rod to be processed, and can stabilize the die head seat to enable the central line of the die head seat to be coincident with the central line of the round rod in the threading process, so that the stability of the external thread processed by manual threading can be improved.

Description

Centering threading tool

Technical Field

The invention belongs to the field of fitter tools, and particularly relates to a centering threading tool.

Background

The processing of external threads, also called threading, on the surface of a round bar is a common processing technique. When a small amount of parts are manufactured or trial-manufactured in a workshop, a bench worker often uses a die to manually tap external threads. The threading die is arranged on a threading die seat with a handle, a threading hole penetrates through the center of the threading die, and a tapping knife edge faces the threading hole. In the tapping process, the threading die rotates and advances along the length direction of the round rod, and simultaneously, the surface of the round rod is cut by the edge of the threading die to form threads. However, in the process of manual threading, the shaking of the die is difficult to avoid, and the central line of the die and the central line of the round rod are difficult to ensure to be always superposed, so that the thread quality is poor. Therefore, there is a need for an improved threading tool configuration that provides increased stability along the center line of the die during advancement of the round bar, thereby improving the quality of the external threads.

Disclosure of Invention

In view of the above, the present invention provides a centering threading tool.

The technical scheme is as follows:

the utility model provides a centering mantle fiber instrument, includes the die shank, is equipped with the installation cavity in this die shank, is provided with the die in this installation cavity, and its key lies in, still be provided with hoop clasping mechanism on the die shank, this hoop clasping mechanism has clasping the hole, should clasp the hole with the hole of die is central line altogether, and this hoop clasping mechanism is located the front end face of the mantle fiber direction of die is out of the plane.

By adopting the design, the circular clamping mechanism has the advantages that the circular clamping mechanism clamps the surface of the circular rod to be processed, the die shank base can be stabilized to enable the central line of the die shank base to be coincident with the central line of the circular rod in the threading process, and the stability of the external thread processed by manual threading can be improved.

As a preferred technical scheme, the circumferential holding mechanism comprises a fixed disk, the fixed disk is fixedly connected with the die seat, a round rod through hole penetrates through the fixed disk, the round rod through hole and an inner hole of the die are concentric, at least two holding blocks are uniformly distributed on the fixed disk around the round rod through hole, the holding blocks are arranged on the fixed disk in a sliding manner along the radial direction, and the inner side surfaces of all the holding blocks surround the holding holes;

the annular holding mechanism further comprises a holding operation piece, and the holding operation piece drives all the holding blocks to synchronously approach or depart from the center line of the holding hole;

and a locking mechanism is arranged between the holding operation piece and the fixed disc.

Design more than adopting, its advantage lies in embracing the operating parts control to embrace the piece and gather together or scatter, can adapt to the round bar of different external diameters, convenient operation, and when embracing the piece and slide to leaning on the round bar surface position, locking mechanical system can keep the hoop to embrace the mechanism stably to its locking.

As a preferred technical scheme, the holding operation piece is a rotating disc, the rotating disc and the fixed disc are arranged in parallel and share a center line, the rotating disc and the dies are respectively arranged on two sides of the fixed disc, and the rotating disc is rotatably connected with the fixed disc;

a abdicating hole penetrates through the rotating disc and is opposite to the round rod through hole;

the rotating disc is provided with curved driving holes, the driving holes correspond to the holding blocks one to one, all the driving holes are circumferentially and uniformly distributed around the abdicating hole, and the driving holes are gradually far away from the abdicating hole from one end to the other end;

and the holding block is provided with a driven rod which extends into the corresponding driving hole.

By adopting the design, when the rotating disc rotates, all the holding blocks are driven by the driven rods to synchronously and centripetally or centrifugally slide.

As an optimal technical scheme, the fixed disc faces the end face of the rotating disc and is provided with at least two radial sliding grooves, all the radial sliding grooves surround the round rod through holes and are distributed in an annular array mode, the radial sliding grooves correspond to the holding blocks in a one-to-one mode, and the holding blocks are arranged in the corresponding radial sliding grooves in a sliding mode respectively.

By adopting the design, the holding block is convenient to install.

As a preferred technical scheme, the outer wall of the rotating disc extends towards the fixed disc to form a rotating ring, the rotating ring is sleeved on the outer wall of the fixed disc, and a limiting column penetrates through the rotating ring along the radial direction of the rotating ring;

the outer wall of the fixed disc is annularly provided with a rotating groove, and the inner end of the limiting column extends into the rotating groove.

By adopting the design, the installation of the rotating disc and the fixed disc is convenient.

Preferably, the locking mechanism includes a pawl and a rack;

a pawl sleeve is radially arranged on the rotating ring in a penetrating manner, the outer wall of the pawl sleeve is in threaded connection with the rotating ring, a pawl rod is movably arranged in the pawl sleeve in a penetrating manner, and the pawl is arranged at the inner end of the pawl rod;

the rack is arranged on the outer wall of the rotating disc in the annular direction, and the pawl faces the rack;

a stop block is arranged on the pawl rod close to the inner end of the pawl rod, a pressure spring is arranged between the stop block and the outer end of the pawl sleeve, and the pressure spring is sleeved on the pawl rod.

By adopting the design, the locking mechanism is simple and is easy to lock and unlock.

Compared with the prior art, the invention has the beneficial effects that: the annular holding mechanism clamps the surface of the round rod to be processed, and can stabilize the die head seat to enable the central line of the die head seat to be coincident with the central line of the round rod in the threading process, so that the stability of the external thread processed by manual threading can be improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of an integrally formed die plate and a fixing plate 300;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is a schematic view of the structure of the rotary disk;

FIG. 7 is a cross-sectional view C-C of FIG. 6;

FIG. 8 is a schematic view of a locking mechanism;

fig. 9 is an enlarged view of a portion m in fig. 8.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1 and 2, a centering threading tool includes a die holder 100, the die holder 100 is cylindrical, a handle is provided on an outer wall thereof, an inner cavity thereof forms a mounting cavity, a die 200 is provided in the mounting cavity, and the die 200 is connected to the die holder 100 by a pin. The die stock 100 is further provided with a hoop holding mechanism, the hoop holding mechanism is provided with a holding hole, the holding hole and the inner hole of the die 200 are concentric, and the hoop holding mechanism is located outside the front end face of the threading direction of the die 200. The threading direction refers to a direction in which the die 200 advances along the round bar to be processed when the external thread is processed.

As shown in fig. 3, 4 and 5, the circumferential clasping mechanism comprises a fixed disk 300, the fixed disk 300 and the die stock 100 are integrally formed, a round rod through hole 301 penetrates through the fixed disk 300, the round rod through hole 301 and the inner hole of the die 200 share a center line, at least two clasping blocks 400 are uniformly distributed on the fixed disk 300 around the round rod through hole 301, the clasping blocks 400 are arranged on the fixed disk 300 in a sliding manner along the radial direction, and the inner side faces of the clasping blocks 400 encircle to form clasping holes.

The circumferential clasping mechanism further comprises a clasping operation member 500, and the clasping operation member 500 drives all the clasping blocks 400 to synchronously approach or depart from the center line of the clasping hole. A locking mechanism is disposed between the clasping operation member 500 and the fixed disk 300.

Specifically, the clasping operation member 500 is a rotating disc, the rotating disc and the fixed disc 300 are arranged in parallel and share a center line, the rotating disc and the dies 200 are respectively located on two sides of the fixed disc 300, and the rotating disc is rotatably connected with the fixed disc 300. The end face, facing the rotating disc, of the fixed disc 300 is provided with radial sliding grooves 302, the radial sliding grooves 302 correspond to the holding blocks 400 one to one, and the holding blocks 400 are respectively arranged in the corresponding radial sliding grooves 302 in a sliding manner. The radial sliding groove 302 is designed as a slot with a reduced opening, or the rotating disc abuts against the opening of the radial sliding groove 302, so as to prevent the holding block 400 from sliding out of the radial sliding groove 302.

As shown in fig. 6 and 7, a relief hole 501 penetrates through the rotating disc, and the relief hole 501 is opposite to the round rod through hole 301; offer the drive hole 502 of curve form on the rolling disc, drive hole 502 with hold the piece 400 one-to-one, all drive hole 502 centers on hole 501 hoop evenly distributed steps down, drive hole 502 is kept away from one end to the other end gradually hole 501 steps down. Preferably, the driving groove 502 is provided on the rotating disc along an involute direction of the abdicating hole 501.

The holding block 400 is provided with a driven rod 401, and the driven rod 401 extends into the corresponding driving hole 502.

The outer wall of the rotating disc extends towards the fixed disc 300 to form a rotating ring 503, the rotating ring 503 is sleeved on the outer wall of the fixed disc 300, at least three limiting columns 600 penetrate through the rotating ring 503 along the radial direction of the rotating ring, a rotating groove 303 is formed in the outer wall of the fixed disc 300 in the circumferential direction, and the inner ends of the limiting columns 600 extend into the rotating groove 303. This allows the rotary disk to be rotatably coupled with the fixed disk 300. The outer side wall of the rotating disc is knurled, so that manual rotation is facilitated.

As shown in fig. 8 and 9, the locking mechanism includes a pawl 700 and a rack 304. The rack 304 is cut circumferentially on the outer wall of the rotating disk. A pawl sleeve 704 is arranged on the rotating ring 503 along the radial direction in a penetrating manner, the outer wall of the pawl sleeve 704 is in threaded connection with the rotating ring 503, a pawl rod 701 is movably arranged in the pawl sleeve 704 in a penetrating manner, the outer end of the pawl rod 701 is provided with a limiting head, the inner end of the pawl rod 701 is provided with the pawl 700, and the pawl 700 faces the rack 304. The outer end of the pawl sleeve 704 is provided with a limit ring, and the pawl rod 701 penetrates through the limit ring. A stop block is further arranged on the pawl rod 701 close to the inner end of the pawl rod, a pressure spring 703 is further arranged between the stop block and the limiting ring, the pressure spring 703 is sleeved on the pawl rod 701, the inner end of the pressure spring 703 abuts against the stop block, and the outer end of the pressure spring 703 abuts against the inner side face of the limiting ring. In a normal state, under the thrust of the compression spring 703, the pawls 700 extend inward and block the racks 304, so that the rotary disk and the fixed disk 300 are relatively locked.

The use method of the centering threading tool comprises the following steps: outwards pulling pawl pole 701 is in order to release fixed disk 300 rotates the rolling disc, drive hole 502 passes through driven lever 401 drives correspondingly embrace piece 400 along radial spout 302 is outwards slided, all embrace piece 400 and outwards slide in step, embrace the hole and enlarge, then will treat the round bar of processing and pass abdication hole 501 round bar via hole 301 with the hole of threading die 200, then rotate the rolling disc is so that all the medial surface of embracing piece 400 supports and leans on the outer wall of round bar, pawl 700 at this moment with rack 304 chucking is in order to lock rolling disc and fixed disk 300 embraces the round bar, holds the handle again and rotates this mantle fiber instrument and taps the external screw thread. Because current instrument mantle fiber in-process, because only the edge of a knife of die 200 cuts the contact with the round bar surface, be difficult to keep the central line of die 200 to coincide with the round bar all the time, consequently the external screw thread quality of processing is not good, and the utility model discloses an instrument carries out mantle fiber man-hour, and the hoop is held the mechanism and is held on the round bar surface all the time and be located die the place ahead, plays stability and guide effect to die block 200, and mantle fiber in-process die 200 remains throughout and the round bar is central line altogether, therefore can the high-quality external screw thread of manual work play.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a centering mantle fiber instrument, includes die block (100), is equipped with the installation cavity in this die block (100), is provided with die (200), its characterized in that in this installation cavity: the threading die is characterized in that a hoop holding mechanism is further arranged on the die seat (100), the hoop holding mechanism is provided with a holding hole, the holding hole and the inner hole of the die (200) share the center line, and the hoop holding mechanism is located outside the front end face of the threading direction of the die (200).

2. The centering threading tool of claim 1, wherein: the annular holding mechanism comprises a fixed disc (300), the fixed disc (300) is fixedly connected with the die block (100), a round rod through hole (301) penetrates through the fixed disc (300), the round rod through hole (301) and an inner hole of the die (200) share a center line, at least two holding blocks (400) are uniformly distributed on the fixed disc (300) around the round rod through hole (301), the holding blocks (400) are arranged on the fixed disc (300) in a sliding mode along the radial direction, and the inner side faces of all the holding blocks (400) are surrounded by holding holes;

the annular holding mechanism further comprises a holding operation piece (500), and the holding operation piece (500) drives all the holding blocks (400) to synchronously approach or depart from the center line of the holding hole;

and a locking mechanism is arranged between the holding operation piece (500) and the fixed disc (300).

3. The centering threading tool of claim 2, wherein: the holding operation piece (500) is a rotating disc, the rotating disc and the fixed disc (300) are arranged in parallel and share the same central line, the rotating disc and the dies (200) are respectively arranged on two sides of the fixed disc (300), and the rotating disc is rotatably connected with the fixed disc (300);

a yielding hole (501) penetrates through the rotating disc, and the yielding hole (501) is opposite to the round rod through hole (301);

the rotating disc is provided with curved driving holes (502), the driving holes (502) correspond to the holding blocks (400) one by one, all the driving holes (502) are circumferentially and uniformly distributed around the abdicating hole (501), and the driving holes (502) are gradually far away from the abdicating hole (501) from one end to the other end;

and a driven rod (401) is arranged on the holding block (400), and the driven rod (401) extends into the corresponding driving hole (502).

4. The centering threading tool of claim 3, wherein: fixed disk (300) orientation the terminal surface of rolling disc is equipped with two at least radial spout (302), and is all radial spout (302) center on round bar via hole (301) are the annular array and distribute, radial spout (302) with hold piece (400) one-to-one, it slides respectively and sets up correspondingly to hold piece (400) in radial spout (302).

5. The centering threading tool of claim 4, wherein: the outer wall of the rotating disc extends towards the fixed disc (300) to form a rotating ring (503), the rotating ring (503) is sleeved on the outer wall of the fixed disc (300), and a limiting column (600) penetrates through the rotating ring (503) along the radial direction of the rotating ring;

the outer wall of the fixed disc (300) is annularly provided with a rotating groove (303), and the inner end of the limiting column (600) extends into the rotating groove (303).

6. The centering threading tool of claim 5, wherein: the locking mechanism comprises a pawl (700) and a rack (304);

a pawl sleeve (704) radially penetrates through the rotating ring (503), the outer wall of the pawl sleeve (704) is in threaded connection with the rotating ring (503), a pawl rod (701) movably penetrates through the pawl sleeve (704), and the pawl (700) is arranged at the inner end of the pawl rod (701);

the rack (304) is arranged on the outer wall of the rotating disc in the circumferential direction, and the pawl (700) faces the rack (304);

a stop block is further arranged on the pawl rod (701) close to the inner end of the pawl rod, a pressure spring (703) is further arranged between the stop block and the outer end of the pawl sleeve (704), and the pressure spring (703) is sleeved on the pawl rod (701).