CN111940856A

CN111940856A - Internal thread cutting knife based on automatic tool bit of changing of atmospheric pressure

Info

Publication number: CN111940856A
Application number: CN202010828641.1A
Authority: CN
Inventors: 程贵娣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-17

Abstract

The invention relates to the technical field of thread machining, and discloses an internal thread cutting knife capable of automatically replacing a knife head based on air pressure. This internal thread cutting knife based on automatic change tool bit of atmospheric pressure leads to the push rod to remove under compression spring's effect through the pressure chamber decompression, and the tight pulley drives the worm and rotates this moment, and the worm drives the runner and rotates, and the rethread runner is used with the cooperation of tool bit to the effect of automatic change tool bit has been reached.

Description

Internal thread cutting knife based on automatic tool bit of changing of atmospheric pressure

Technical Field

The invention relates to the technical field of thread machining, in particular to an internal thread cutting knife capable of automatically replacing a knife head based on air pressure.

Background

The thread refers to a spiral continuous raised part with a specific section manufactured on the surface of a cylindrical or conical parent body, and the continuous raised part is divided into an external thread and an internal thread according to the position of the parent body, and the thread is generally processed by cutting, turning, milling, grinding and other processes.

Internal thread cutting knife is in the use, and wearing and tearing and disconnected sword often can appear, just need to change new tool bit this moment, and current internal thread cutting knife need take off the tool bit with specialized tool and change new tool bit, uses troublesome, and is comparatively troublesome when fixed internal thread cutting knife simultaneously, needs the angle of adjusting internal thread cutting knife at any time, if the angle is not fixed, can influence the internal thread cutting quality.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an internal thread cutting knife capable of automatically replacing a knife head based on air pressure, which has the advantages of automatic knife head replacement, convenience in use, easiness in fixing the knife head, high thread cutting quality and the like, and solves the problems of trouble in knife head replacement, inconvenience in fixing the knife head and influence on cutting quality.

(II) technical scheme

In order to realize the purposes of automatic tool bit replacement, convenient use, easy tool bit fixation and high thread cutting quality, the invention provides the following technical scheme: an internal thread cutting knife capable of automatically replacing a knife head based on air pressure comprises an installation rod, a transmission cavity is formed in the installation rod, a fastening wheel is fixedly connected to the inner wall of the transmission cavity, a worm is meshed to the left side of the fastening wheel, a gear is meshed to the bottom of the fastening wheel, a cam is fixedly connected to the back of the gear, a buffer spring is fixedly connected to the inner bottom of the transmission cavity, a limiting rod is fixedly connected to the top of the buffer spring, a fixed shaft is fixedly connected to the front of the installation rod, a supporting rod is fixedly connected to the inner wall of the fixed shaft, a reset spring is sleeved on the outer side of the supporting rod, a sliding rod is fixedly connected to the right side of the reset spring, a connecting rod is movably connected to the left side of the sliding rod, a clamping block is movably connected to the left side of the connecting rod, the utility model discloses a tool bit, including tool bit, pressure chamber, installation pole, left swing claw and right swing claw, the pressure chamber has been seted up to the inside of tool bit, the inside sliding connection of pressure chamber has the push rod, compression spring has been cup jointed in the outside of push rod, the bottom swing joint of installation pole has left swing claw and right swing claw, the equal fixedly connected with pullback spring in top of left swing claw and right swing claw.

Preferably, the inside fixedly connected with clockwork spring of tight pulley, the clockwork spring is used for driving tight pulley.

Preferably, a worm wheel is fixedly connected to the back of the rotating wheel, and the worm wheel is meshed with the worm.

Preferably, the tool bit has three groups, and evenly distributed is in the outside of runner, the change of being convenient for.

Preferably, bayonets are evenly opened in the interior of runner, use with the fixture block cooperation for the fixed tool bit position.

Preferably, the outer side of the fixed shaft is provided with a clamping groove which is matched with the push rod for positioning the cutter head.

Preferably, the sliding rod is connected with the supporting rod in a sliding mode, so that the sliding rod can only move along the direction of the supporting rod, and stable transmission of the sliding rod is guaranteed.

Preferably, a stop block and a pawl are fixed at the top of each of the left swing claw and the right swing claw, the stop block is used for fixing a pull-back spring, and the pawl is used for preventing the left swing claw and the right swing claw from swinging when in use.

(III) advantageous effects

Compared with the prior art, the invention provides an internal thread cutting knife capable of automatically replacing a knife head based on air pressure, which has the following beneficial effects:

1. this internal thread cutting knife based on automatic change tool bit of atmospheric pressure leads to the push rod to remove under compression spring's effect through the pressure chamber decompression, and the tight pulley drives the worm and rotates this moment, and the worm drives the runner and rotates, and the rethread runner is used with the cooperation of tool bit to the effect of automatic change tool bit has been reached.

2. This internal thread cutting knife based on automatic tool bit of changing of atmospheric pressure drives the slide bar through the push rod and moves to the right, and the slide bar drives the connecting rod and moves to the right, and the connecting rod drives the fixture block and slides, and the rethread fixture block uses with the cooperation of runner inner wall bayonet socket to the effect that can light fixed tool bit has been reached.

Drawings

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

FIG. 2 is a partial schematic view of a fastening wheel of the present invention;

FIG. 3 is a schematic view of a portion of a tool bit in accordance with the present invention;

FIG. 4 is a partial schematic view of the right swing claw of the present invention.

In the figure: 1-mounting rod, 2-transmission cavity, 3-fastening wheel, 4-worm, 5-rotating wheel, 6-cutter head, 7-pressure cavity, 8-push rod, 9-compression spring, 10-fixed shaft, 11-supporting rod, 12-reset spring, 13-sliding rod, 14-connecting rod, 15-clamping block, 16-gear, 17-cam, 18-limiting rod, 19-buffer spring, 20-left swing claw, 21-pull-back spring and 22-right swing claw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an internal thread cutter for automatically replacing a cutter head based on air pressure comprises a mounting rod 1, a transmission cavity 2 is formed in the mounting rod 1, a fastening wheel 3 is fixedly connected to the inner wall of the transmission cavity 2, a clockwork spring is fixedly connected to the interior of the fastening wheel 3 and used for driving the fastening wheel 3, a worm 4 is meshed with the left side of the fastening wheel 3, 40Cr is adopted as a material of the worm 4, sufficient torsional strength is achieved, a gear 16 is meshed with the bottom of the fastening wheel 3, a cam 17 is fixedly connected to the back of the gear 16, a buffer spring 19 is fixedly connected to the inner bottom of the transmission cavity 2, 65Mn is adopted as a material of the buffer spring 19, a limiting rod 18 is fixedly connected to the top of the buffer spring 19, a fixing shaft 10 is fixedly connected to the front of the mounting rod 1, a clamping groove is formed in the outer side of the fixing shaft 10 and used in cooperation with, the outer side of the supporting rod 11 is sleeved with a return spring 12, the right side of the return spring 12 is fixedly connected with a sliding rod 13, the sliding rod 13 is in sliding connection with the supporting rod 11, the sliding rod 13 can only move along the direction of the supporting rod 11, stable transmission of the sliding rod 13 is ensured, the left side of the sliding rod 13 is movably connected with a connecting rod 14, the left side of the connecting rod 14 is movably connected with a clamping block 15, the outer side of the fixed shaft 10 is sleeved with a rotating wheel 5, the back of the rotating wheel 5 is fixedly connected with a turbine, the turbine is made of HT200 and meshed with a worm 4, bayonets are uniformly arranged in the rotating wheel 5 and matched with the clamping block 15 for fixing the position of the tool bit 6, two corresponding bayonets are perpendicular to the push rod 8, which tool bit 6 is used regardless of the replacement, the tool bit 6 can be fixed, the outer side of the rotating wheel 5 is, be convenient for change, pressure chamber 7 has been seted up to tool bit 6's inside, the inside sliding connection of pressure chamber 7 has push rod 8, compression spring 9 has been cup jointed in the outside of push rod 8, the bottom swing joint of installation pole 1 has left swing claw 20 and right swing claw 22, left swing claw 20 all is fixed with dog and pawl with the top of right swing claw 22, the dog is used for fixed pullback spring 21, the pawl is in order to prevent that left swing claw 20 and right swing claw 22 from swinging when using, the equal fixedly connected with pullback spring 21 in top of left swing claw 20 and right swing claw 22.

The working principle is that when the cutter head 6 is seriously worn or broken in the using process, the pressure in the pressure cavity 7 is lost, the push rod 8 moves rightwards under the action of the compression spring 9, the push rod 8 moves rightwards to be out of the clamping groove on the outer side of the fixed shaft 10, meanwhile, the slide rod 13 slides rightwards under the action of the return spring 12, the slide rod 13 slides rightwards to drive the connecting rod 14 to slide rightwards, the connecting rod 14 slides rightwards to drive the clamping block 15 to slide towards the inner part of the fixed shaft 10, the clamping block 15 does not limit the rotation of the rotating wheel 5 any more, at the moment, the fastening wheel 3 rotates under the action of the inner clockwork spring, the fastening wheel 3 rotates to drive the worm 4 to rotate, the worm 4 rotates to drive the rotating wheel 5 to rotate through the turbine on the back of the rotating wheel 5, the rotating wheel 5 rotates to enable the damaged cutter head 6 to turn upwards, meanwhile, the, the limiting rod 18 moves upwards, so that the left swing claw 20 and the right swing claw 22 can swing towards the outer side of the mounting rod 1, the tool bit 6 can smoothly rotate, when the tool bit 6 is replaced, the left swing claw 20 and the right swing claw 22 return to the original position again under the action of the pull-back spring 21, the tool bit 6 can be conveniently placed and the unused tool bit 6 can be conveniently protected, when the new tool bit 6 rotates to the use position, the push rod 8 is clamped into the clamping groove in the surface of the fixing shaft 10 under the action of air pressure in the pressure cavity 7, meanwhile, the push rod 8 presses the slide rod 13 to slide leftwards on the supporting rod 11, the slide rod 13 slides leftwards to compress the reset spring 12, meanwhile, the slide rod 13 drives the connecting rod 14 to move leftwards, the connecting rod 14 drives the clamping block 15 to slide towards the outer side of the fixing shaft 10, and the clamping block 15 slides into the clamping opening in the inner wall of the.

In conclusion, this internal thread cutting knife based on automatic change tool bit of atmospheric pressure results in push rod 8 to remove under compression spring 9's effect through 7 decompression of pressure chamber, and fastening wheel 3 drives worm 4 and rotates this moment, and worm 4 drives runner 5 and rotates, and the rethread runner 5 uses with the cooperation of tool bit 6 to the effect of automatic change tool bit has been reached. This internal thread cutting knife based on automatic tool bit of changing of atmospheric pressure drives slide bar 13 through push rod 8 and moves to the right, and slide bar 13 drives connecting rod 14 and moves to the right, and connecting rod 14 drives fixture block 15 and slides, and rethread fixture block 15 uses with the cooperation of 5 inner wall bayonets of runner to reach the effect that can light fixed tool bit, application scope is more extensive.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an internal thread cutting knife based on automatic tool bit of changing of atmospheric pressure, includes installation pole (1), its characterized in that: the utility model discloses a fixing device for the hydraulic oil pump, including installation pole (1), transmission chamber (2) have been seted up to the inside of installation pole (1), the inner wall fixedly connected with fastening wheel (3) of transmission chamber (2), the left side meshing of fastening wheel (3) has worm (4), the bottom meshing of fastening wheel (3) has gear (16), the back fixedly connected with cam (17) of gear (16), the interior bottom fixedly connected with buffer spring (19) of transmission chamber (2), the top fixedly connected with gag lever post (18) of buffer spring (19), the front fixedly connected with fixed axle (10) of installation pole (1), the inner wall fixedly connected with branch (11) of fixed axle (10), reset spring (12) has been cup jointed in the outside of branch (11), the right side fixedly connected with slide bar (13) of reset spring (12), the left side swing joint of slide bar (13) has connecting rod (14), the utility model discloses a swing joint structure of installation pole, including connecting rod (14), clamping block (15), runner (5) have been cup jointed in the outside of fixed axle (10), the outside fixedly connected with tool bit (6) of runner (5), pressure chamber (7) have been seted up to the inside of tool bit (6), the inside sliding connection of pressure chamber (7) has push rod (8), compression spring (9) have been cup jointed in the outside of push rod (8), the bottom swing joint of installation pole (1) has left side swing claw (20) and right side swing claw (22), the equal fixedly connected with pullback spring (21) in top of left side swing claw (20) and right side swing claw (22).

2. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: the inside fixedly connected with clockwork spring of tight pulley (3).

3. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: the back of the rotating wheel (5) is fixedly connected with a turbine.

4. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: the tool bit (6) has three groups which are evenly distributed on the outer side of the rotating wheel (5).

5. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: bayonets are uniformly arranged in the rotating wheel (5).

6. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: the outer side of the fixed shaft (10) is provided with a clamping groove.

7. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: the sliding rod (13) is connected with the supporting rod (11) in a sliding mode.

8. The internal thread cutting knife based on the automatic tool bit that changes of atmospheric pressure of claim 1, characterized in that: and a stop block and a pawl are fixed at the tops of the left swing claw (20) and the right swing claw (22).